Evince is a document viewer for the GNOME desktop environment. It currently supports pdf, postscript, djvu, tiff and dvi. The goal of evince is to replace the multiple document viewers that exist on the GNOME Desktop with a single simple application. Source code is available.
Created: 10/04/2008
by Maxim SmirnovMore...
XWRT (XML-WRT) is a high-performance XML compressor (it also works with textual files). It transforms XML to a more compressible form and uses zlib (default), LZMA, PPMVC, or lpaq6 as a back-end compressor. It is similar to XMill, but has many improvements. Takes fourth and third places in LTCB text compression benchmark as for January 2008. The author is Przemyslaw Skibinski.
Created: 29/01/2008
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3 free online gif making tools. Now you can convert video or pictures into animated gifs all online without downloading a program. Also split your gifs into frames, comment, rank and browse the thousands of gifs on the site.
Created: 01/02/2007
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SPDemo is an assisting tool for teaching speech & audio processing techniques developed in SIPL.
Using SPDemo one can select from a variety of speech & audio processing techniques and parameters in a straightforward and simple way. The results of this processing are shown both numerically and graphically, in order to ease the analysis of data. The purpose of SPDemo is to enable experiments with different audio & speech processing algorithms without actually implementing them.
Free for educational purposes.
Created: 05/02/2007
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PeaZip is an archiver tool that supports its native Pea archive format (featuring compression, split volumes, and flexible authenticated encryption and integrity check schemes) and other mainstream formats, with special focus on handling open formats.
Create and extract 7Z, 7-Zip sfx, Bzip2, Gzip, PEA, split, TAR, and ZIP.
Browse and extract CAB, JAR, LZH, RAR and many more archive formats.
Created: 02/02/2007
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This paper shows how to improve lossless compression of natural images treating low order bits in a special way.
Created: 07/08/2007
by Maxim SmirnovMore...
YUVsoft's Lossless Video Codec (YULS) is slow, but very efficient in terms of compression ratio. It is claimed to provide the best lossless compression ratio on average among other lossless codecs. VfW interface, freeware.
Created: 23/12/2006
by Maxim SmirnovMore...
Simple, but handy player for raw (uncompressed) 4:2:0, 4:2:2 and 4:0:0 (grayscale) format YUV files. By Gary J Dickson.
Created: 04/05/2005
by Maxim SmirnovMore...
Everybody know, that MP3 CANNOT be compressed (commonly on MP3 forums some guys offer genius idea to use zip for MP3 collection, but moderators stop such stupid threads before all other guys describe such ideas level). Common compression ratio for MP3 files is 1:1.01 even for very good compressors.
This utility allows to compress with ratio 1:1.2! Let's test it!
Created: 31/05/2006
by Dmitriy VatolinMore...
Tuck is a portable, lossless data compression tool based on the
Burrows-Wheeler transform, thus ensuring good compression ratios.
It currently runs quite slowly (slower than the efficient bzip2 ),
mainly because of the block-sorting algorithms involved.
As of March 2006 (initial release, v0.10) tuck is distributed as a
Mach-O PowerPC command-line program only.
The C source code will be released. A library interface similar to that
of zlib or and libbz2 will be exposed
Created: 10/04/2006
by Vadim YoockinMore...
ExtractNow is a simple utility that allows you to extract multiple files with drag-and-drop interface.
ExtractNow supports the two most popular compression formats, [ZIP] and RAR, as well as ISO, BIN, IMG, IMA, IMZ, 7Z, ACE, JAR, GZ, LZH, LHA, SIT.
Created: 12/04/2006
by centristMore...
This codec is intended for lossless compression of video taken from computer screen. It may be used for making software presentations, video lessons and tutorials, recording video from games etc.
Created: 28/03/2006
by Dmitriy VatolinMore...
PBZIP2 is a parallel implementation of the bzip2 block-sorting file compressor that uses pthreads and achieves near-linear speedup on SMP machines. The output of this version is fully compatible with bzip2 v1.0.2 (ie: anything compressed with pbzip2 can be decompressed with bzip2). Source code available.
Created: 03/03/2006
by Jeff GilchristMore...
This forum thread describes an experimental high quality wavelet videocodec named "Snow". It is being developed by FFmpeg team. There is a 3rd party encoding GUI for the codec.
Created: 26/02/2006
by Maxim SmirnovMore...
La is a Lossless Audio compression program giving (currently) superior compression ratio. Features: windows frontend (which also supports many other codecs), versions for both Windows and Linux OSes, Winamp, foobar2000 and Xmms plugins for playback.
Created: 11/02/2006
by Maxim SmirnovMore...
HomeBoy was a group of programers that created the first ISO compliant publicly available AAC encoder for Windows back in 1998. Also, they were reportedly creators of the first third party plugin for Winamp (their AAC input plugin), and the first ISO-compliant AAC decoder publicly available.
The encoder is just a compile of the original ISO reference sources, therefore quality is bad. But, interestingly, streams created by it can still be played in modern decoders.
Created: 31/01/2006
by Maxim SmirnovMore...
The unofficial MPEG Audio page at University of Hannover. The page has news about MPEG Audio, overviews, a set of usefull links, MPEG Audio FAQ, MPEG-4 Audio standard drafts, some reference software.
Created: 31/01/2006
by Maxim SmirnovMore...
Real is making their client software available in an Open Source program. Download this software and you can develop your own MP3 or H.263 player! Free of royalties if you are distributing it for free - commercial products pay a royalty. The Helix DNA Client contains support in source code form for the following data types: MP3, H.263, SMIL, JPEG, GIF, PNG, RealPix, PCM, WAV.
Created: 30/10/2002
by Mark NelsonMore...
Non-commercial resource which is dedicated, according to its author, to all kinds of video processing (codecs, filters, utils, etc.). Currently it contains only a lossless and near-lossless video codec, and some common benchmark video sequences.
Created: 03/12/2005
by Dmitriy KovalevMore...
UHARC - a freeware command-line archiver with good compression ratio. UHARC 0.6a archives are compatible with v0.6 archives but NOT compatible with any previous version (version number < 0.6).
Created: 01/01/1970
by Mark NelsonMore...
A bijective compressor using full size Rijndael encryption. BICOM is a freely available open source compressor. It uses a souped-up PPM algorithm, and is completely bijective.
Created: 01/11/2002
by Mark NelsonMore...
Free and simple open source DjVu viewer with following features:
# Supports Windows 98 and later
# Continuous and single page layouts
# Thumbnails
# Bookmarks
# Hyperlinks
# Text searching and copying
# Advanced printing
# Fullscreen mode
# Mouse wheel scrolling
# Export pages to bmp
# Rotate pages left/right
# Zoom to page, page width, 100% or custom zoom
# Brightness, contrast and gamma adjustment
# Display modes (Color/B&W/Foreground/Background)
# Keyboard shortcuts for scrolling and navigation
Created: 24/09/2005
by Dmitriy VatolinMore...
DjVuLibre includes a standalone viewer, a browser plug-in (for Mozilla, Firefox, Konqueror, Netscape, Galeon, and Opera), and command line tools (decoders, encoders, utilities). DjVuLibre works under Unix with X11.
Created: 24/09/2005
by Dmitriy VatolinMore...
Open source wavelet videocodec, previously developed by BBC. It uses
parametric affine motion compensation, arithmetic encoding and other
modern techniques. Surprisingly for the open source, it looks like the
project is well-documented.
Created: 23/09/2005
by Dmitriy VatolinMore...
LZPX is a fast file compressor/preprocessor. The main features of this program are: ultra fast compression and decompression speed, low memory usage and small size.
Created: 09/09/2005
by encodeMore...
A lossless audio codec developed in Russia. TTA performs lossless compression on multichannel 8, 16 and 24-bit data of WAV audio files. Distributed under a free license with sources, there are executables for Windows, Linux and Mac OS-X PPC. There are a number of plug-ins for players, including WinAmp. See comparisons with other audiocodecs on the site.
Version 3.3 is shipped as of August 2005
Created: 12/09/2004
by Mark NelsonMore...
p7zip is a quick port of 7za.exe (command line version of 7-Zip, see www.7-zip.org) for Unix (POSIX). 7-Zip is a file archiver with the highest compression ratio. There is also a port of the LZMA Decoder from LZMA SDK 4.03 to Java (java_lzma).
Version 4.20 is shipping as of June, 2005.
Created: 04/07/2004
by Mark NelsonMore...
Yet another free Zip program with the usual cast of features. Supports a pretty good variety of archives (including ace, arj, cab, rar), runs under Win32 only, etc. There are a number of localizations to national languages.
Filzip 3.0.4 is shipping in July, 2005.
Created: 15/05/2004
by Mark NelsonMore...
SBC is a freeware Burrows Wheeler Transform based file archiver. It's one of the fastest BWT implementations with high compression ratio. SBC also introduces a high security options with a number of strong encryption algorithms. Command-line interface only. Comment from a DCL user: Cool archiver; the author has made great effors to make it really fast and also added a lot of heuristics to behave well on multimedia data.
Created: 24/04/2001
by Mark NelsonMore...
An experimental archiver that uses a BWT algorithm to achieve superior compression. With Zzlib, you can also use Zzip as a library (dll) in one of your program. Source code of Zzip/Zzlib is released under the GNU LGPL.
Created: 19/03/2002
by Mark NelsonMore...
A free self-extractor bundler, it can take a standard Zip file and convert it into a self-extracting EXE, or take a self-extracting EXE and turn it into a Zip file. Free for non-commercial use, now has many features to customise appearance of self-extracting archives in the 3.0 release.
Version 3.0 is shipping as of August, 2005.
Created: 31/05/2004
by Mark NelsonMore...
Some pages that go along with the book "Managing Gigabytes", by Witten et.al. These pages are devoted to MG, "an open-source indexing and retrieval system for text, images, and textual images."
Created: 15/11/1999
by Mark NelsonMore...
shnutils is a collection of 3 Perl scripts developed to assist in the process of using shorten to trade digital music. These scripts, which run on both Linux and Windows, facilitate compressing WAV files using shorten, and also in creating and verifying MD5 hashes.
Created: 27/09/2001
by Mark NelsonMore...
Szip is a freeware portable general purpose lossless compression program. It has a high speed and compression, but high memory demands (up to 20MB) too. The compression is done using a variant of blocksorting, which explains its rather high memory requirements.
Update: Michael Schindler has at long last posted the source code for szip.
Created: 31/10/2002
by Mark NelsonMore...
The home page for Julian Seward's great BWT projects: a compression program and a library. A prelease of bzip2 1.0 was released 4/15/00
Created: 15/04/2000
by Mark NelsonMore...
JPEG-LS is the new lossless/near-lossless compression standard for continuous-tone images developed by ISO/IEC JTC1/SC29/WG1 (final draft international standard FDIS14495-1 as of Novembr 1998). The standard is based on the LOCO-I algorithm (LOw COmplexity LOssless COmpression for Images) developed at Hewlett-Packard Laboratories
Update: The HP site has just added a JPEG-LS plugin for Photoshop, in addition to the HP implementation that has been there for some time.
Created: 17/04/2002
by Mark NelsonMore...
InterGIF is a freeware program for making animated GIFs. It claims to do a good job of optimization. I have feedback from one use who was quite happy with the results - a sample GIF created by GIMP was reduced from 2235 bytes to 1455. Not bad.
Created: 21/11/1999
by Mark NelsonMore...
This page describes Flexible Parsing, a proposed extension for dictionary based LZ compression schemes. Yossi Matias, Nasir Rajpoot, and Cenk Sahinalp have a summary of their work on this page, along with links to three PS format papers that go into detail on the results. The authors summarize this improved technique as "looking one step ahead for the longest phrase in the dictionary instead of trying to find the longest possible phrase at hand."
Created: 14/12/1999
by Mark NelsonMore...
A very complete archive of compression programs, freeware, shareware, source, archviers, compressors, etc. They have it all. At last count this site has more than 1000 compression downloads
Created: 13/11/1999
by Mark NelsonMore...
LHarc, a precursor to the LHA file utility, became one of the standard file compression/extraction utility in Japan despite its slowness. I am also pleased that some overseas users have taken to using this tool.
Created: 07/11/1999
by Mark NelsonMore...
Booz 2.0 is a small, memory-efficient, public domain Zoo archive extractor/lister. It is not fancy. It does not recognize the advanced features available in current versions of Zoo, such as long filenames, directory names, comments, and multiple file generations. Extraction always uses a short MS-DOS format filename and all extracted files go
into the current directory
Created: 07/11/1999
by Mark NelsonMore...
Source code to the FLAC library, command-line encoder/decoder, and player plugins. FLAC is an open-source lossless audio format and codec.
Created: 15/02/2001
by Mark NelsonMore...
Developed in the scope of MIGRATOR 2000 project (www.migrator2000.org), this site presents a graphical user interface to the three currently available codecs (VM, JJ2000, Jasper) as well as validation and parsing services to J2k codestreams and JP2 files.
It's currently a widely used tool within WG1 (JPEG) to perform compliance tests on coders and codestreams. Site requires free registration for purposes of tracking stored images.
Created: 23/01/2004
by Mark NelsonMore...
Lossless video codec.
An huffyuv based encoder.
If you wiil found it's official site - please let us know!
Created: 20/07/2005
by Dmitriy KulikovMore...
The FFV1 video codec is a simple but efficient lossless intra only codec that was included into "ffdshow" (very useful tool). Available in source code.
From site:
ffdshow is DirectShow and VFW codec for decoding/encoding many video and audio formats, including DivX and XviD movies using libavcodec, xvid and other opensourced libraries with a rich set of postprocessing filters.
Created: 18/07/2005
by Dmitriy KulikovMore...
Loss-Less Codec for Video For Windows.
Since LCL is a Loss-Less codec, it does not have degradation of quality of image.
LCL is suitable for digital animation or the animation of 3DCGs.
LCL contains two kinds of codecs by the use.
Created: 18/07/2005
by Dmitriy KulikovMore...
From site: MindVid is a lossless video codec with a high speed compression and real-time decompression of the video data
Created: 18/07/2005
by Dmitriy KulikovMore...
CorePNG is a lossless codec based on PNG. Essentially, each frame is compressed as a PNG, so if PNG does it, this codec does too. (RGBA) This codec also has the ability to write P frames and to autodetect when it should. The P frame takes the difference of the previous frame and the current frame and encodes that as a PNG.
Created: 18/07/2005
by Dmitriy KulikovMore...
The best lossless video codec / in perfromance-quality terms.
From site:
Huffyuv is a very fast, lossless Win32 video codec. "Lossless" means that the output from the decompressor is bit-for-bit identical with the original input to the compressor. "Fast" means a compression throughput of up to 38 megabytes per second on my 416 MHz Celeron.
Created: 18/07/2005
by Dmitriy KulikovMore...
Lagarith is a lossless video codec. Lagarith offers excellent compression. Lagarith is able to operate in several colorspaces - RGB24, RGB32, RGBA, YUY2, and YV12. Also, Lagarith will never down-sample video, preventing inadvertent quality loss. For DVD video, the compression is typically only 10-30% better than Huffyuv. However, for high static scenes or highly compressible scenes, Lagarith significantly outperforms Huffyuv.
Created: 18/07/2005
by Dmitriy KulikovMore...
Giving the best compression ratio in the lossless video compression field.
This codec is intended for lossless video compression (used for saving master copies or intermediate rendering results).
Created: 18/07/2005
by Dmitriy KulikovMore...
BMF program is lossless/near-lossless image compression utility by Dmitriy Shkarin. It supports true colour, high colour, greyscale and paletted images compression.
See last version on http://www.compression.ru/ds/ (in Russian)
Created: 07/11/1999
by Mark NelsonMore...
The home site for the Flask MPEG conversion program. A program that can convert back and forth between MPEG-1 and MPEG-2. Change parameters such as frame rate, etc. Free!
Created: 04/10/2000
by Mark NelsonMore...
UNSIT is a simple utility for PC users to extract files from a StuffIt file. StuffIt files usually appear with the ".SIT" extension. StuffIt is a program for Macs similar to ARC for PCs. It collects several files in a single file and also compresses the data using run length, Huffman, or LZW compression. Unfortunately, this means Mac files are frequently inaccessible to PC users as they are now "stuffed" to save transmission costs and disk space.
Created: 07/11/1999
by Mark NelsonMore...
The MPEG Software Simulation Group's coder/decoder. mpeg2vidcodec_v12 contains source, mpeg2v12 contains source plus a Win32 executable. Three files to download for the complete deal.
Created: 07/11/1999
by Mark NelsonMore...
LTAC allows for lossless audio compression of PCM coded audio signals (16 bit), i.e. decoding results bit for bit in the original bit stream of the PCM coded signal. In contrast to LTAC there exist a lot of lossy coding algorithms like MPEG, ATRAC and AC-3, which yield higher compression ratios but in any case lead to coding distortions - nothing for HiFi purists and professionals.
User comment: Please note that LTAC is not developed further; it has a successor called LPAC; the rating refers to LPAC which is really an excellent small program.
Created: 04/02/1999
by Mark NelsonMore...
Everything you wanted to know about UnZip, one of the two great Info-ZIP programs.
UnZIp 5.51 shipped in February 2005
Created: 23/05/2004
by Mark NelsonMore...
Hdot264 is an experimental video codec project that is compliant with the latest and most efficient video compression standard. That standard has many aliases, including H.26L, JVT, MPEG-4 part 10, AVC and H.264.
Created: 19/06/2005
by Dmitriy KulikovMore...
This distribution contains MS-DOS 32 bit extended executable copies of version 6b of the Independent JPEG Group's free JPEG software. Several different programs for conversion and manipulation of JPEG files.
Created: 20/12/1998
by Mark NelsonMore...
Jasper is a C-language implementation of the JPEG-2000 Part-1 standard. Michael Adams seems to run the show, with help from Image Power and a small team. This page gives you access to the software, documentation, and a nice set of links. Jasper is distributed under a free license.
Version 1.701.0 is shipping as of February, 2004.
Created: 14/02/2004
by Mark NelsonMore...
This Java browswer knows how to render PDF files, which means it understands the elusive LZW compressed data format used by Adobe.
Created: 08/08/2002
by Mark NelsonMore...
Wouldn't it be great if there was a free MP3 player written in a portable language like Java? These guys certainly think so.
Version 1.0 was shipping in November, 2004.
DCL user comment: Cool.
Created: 11/01/2004
by Mark NelsonMore...
This project is based on Helix Producer: Graphical User Interface (GUI) to convert AVI files into RealMedia (RealVideo, RealAudio). The main feature of RealAnime is batch encoding.
Created: 26/05/2005
by Dmitriy VatolinMore...
GRZipII - is a high-performance file compressor based on Burrows-Wheeler Transform, Schindler Transform, Move-To-Front and Weighted Frequency Counting. It uses The Block-Sorting Lossless Data Compression Algorithm, which has received considerable attention over recent years for both its simplicity and effectiveness. This implementation has compression rate of 2.234 bps on the Calgary Corpus(14 files) without preprocessing filters. There are Windows, Linux, and Dos executables along with the sources.
Created: 23/05/2005
by Ilya GrebnovMore...
TC is a freeware LZW-based file compressor. Low memory usage, fast compression and decompression speed, relatively good compression ratio. The site is on Russian, but Babel Fish gives a decent translation.
Created: 19/05/2005
by encodeMore...
This is a lossless audio compression format that has support for WinAmp and Windows Media Player. Retain perfect fidelity for your music recordings, at the cost of additional disk space.
Version 4.01 is shipping as of January, 2006.
Created: 02/05/2004
by Mark NelsonMore...
Despite the protestations, you can use LAME to create MP3 streams. It does it with the magic of the ISO demo code. LAME isn't lame, lots of people seem to like it.
Created: 15/09/2002
by Mark NelsonMore...
A command line & Windows Explorer integrated archiving program for manipulating zip files and some other formats. 7-zip features great compression ratios, support for quite a few other archive formats, and is free.
DataCompression.info user Gregg A. had this to say: 7-Zip is a great archiver that works with many of the popular archive formats, as well as a new one of its own. This is my favorite compression tool now because it is so universal and it's open-source.
Version 4.18 shipped in April, 2005.
Created: 10/12/2003
by Mark NelsonMore...
Markus F.X.J. Oberhumer & Laszlo Molnar have created an executable packer that works on DOS, Linux, and Windows executables.
A DCL user had this to say: UPX is just excellent - and it's free.
UPX 1.25 is shipping as of June, 2004.
Created: 04/07/2004
by Mark NelsonMore...
The home page for TMW. TMW is a program for losslessly compressing greyscale images that gives world class compression ratios, at the cost of being tremendously CPU intensive. The current version is TMW_0.51, and is still completely experimental
Created: 07/11/1999
by Mark NelsonMore...
This is an updated version of the original Mpeg Player developed at UC-Berkeley, with a nice graphical user interface. The versions below were developed here at the University of Minnesota's Geometry Center.
Created: 07/11/1999
by Mark NelsonMore...
Andrew Belov, from ARJ Software Russia, has announced the release of ARJ for Linux and FreeBSD. Links on this site to the OS/2 version as well, if you're in the market for that.
Created: 05/10/2001
by Mark NelsonMore...
x264 is a free library for encoding H264/AVC video streams. It is released under the terms of the GPL license. (x264 is still in early development stage)
Created: 15/05/2005
by Dmitriy VatolinMore...
AudioCoding.com's goal is to provide the community with free MPEG-4 audio codecs. Currently implemented are MPEG-2 and MPEG-4 AAC. The supported AAC profiles are HE, Main, LC, LTP and LD. It also supports all these profiles in their ER (Error Resilient) equivalent. Latest addition in the 2.0 version of the FAAD2 decoder library is the ability to decode HE AAC (High Efficiency) and PS AAC (Parametric Stereo) files.
Created: 22/05/2004
by Mark NelsonMore...
The home page for lzop - a file compressor that is built on the LZO compression library. lzop is free under the GPL.
Version 1.01 of LZOP shipped in April of 2003.
Created: 04/05/2003
by Mark NelsonMore...
The MoviX project is a series of three different tiny Linux CD distributions containing all the software to boot from a CD and play multimedia files through MPlayer, the best multimedia player in the Unix world:
eMoviX: a micro Linux distro meant to be embedded in a CD together with all video/audio files you want, so that the CD will be able to boot and automagically play all files;
MoviX: a mini CD Linux distro able to boot directly from CD and load in RAM a console interface to MPlayer. From the interface you can easily play DVDs, VCDs, audio/video files Audio CD, internet radios, TV, you name it!
MoviX2:same as MoviX, but it makes use of X and makes use of the nice MPlayer GUI.
Supported formats are all formats supported by MPlayer, most noticeably DivX but more in general any AVI, MPG, QuickTime, MP3, OGG/VORBIS and a few others.
eMoviX is at release 0.8.0rc1, MoviX is at 0.8.0pre2, and MoviX2 is at pre0.3.0pre2 as of April, 2003.
Created: 05/04/2003
by Mark NelsonMore...
A Huffman file compressor for *NIX platforms. The author admits that the compression is perhaps not the best, but says it's going to be just right for embedded programming because of its miniscule footprint and high speed.
Version 1.01 was shipping in June, 2003.
Created: 12/06/2003
by Mark NelsonMore...
bwtzip is an ongoing project, distributed under the GNU General Public License, to implement a Burrows-Wheeler compressor in standard, portable C++. It is research-grade in that it is highly modularized and abstracted, so that it is simple to swap out parts of the compressor without affecting anything else. This makes it easy to experiment with different algorithms at different stages of compression.
Looks like Steven T. Lavavej released a new version of bwtzip in early February, 2003. A wide variety of improvements, most of them in implementation - not visible to the end user. A description of recent changes is found here
Created: 11/12/2002
by Mark NelsonMore...
This program tries to unpack the given file by application of several algorithms byte-by-byte. Result of work of the program is the set of files with the unpacked data. Many of the produced files are not correct. However, among them there can be correctly unpacked data. Correctly unpacked files have mainly significant sizes that distinguishes them from dust.
Created: 28/07/2004
by Mark NelsonMore...
Mp3stat is Linux a utility program to compare encoders against an MP3 that was VBR encoded. It outputs a linear graphical bitstream analysis of each MP3 being compared and gives you a breakdown of how many frames of each bitrate are found in the MP3. It basically allows you to see how encoders treat areas in the same MP3s differently and lets users discover some of the bitrate effects of different quality levels of the same encoder. Mp3stat also supports Oggs.
Version 2.5.10 of mp3stat is shipping as July 2004.
Created: 27/07/2004
by Mark NelsonMore...
OggPlay is an Ogg vorbis audio player for smartphones. I started working on this project in early April 2003. The 1st version for the SonyEriccson P800 was released end of April. Many people have contributed localized versions, new skins, documentation, and are helping with porting the application to other phones since then. OggPlay has become a true open source project
Created: 16/07/2004
by Mark NelsonMore...
A compressor built with the world-beating PAQAR 3.0 compressor. axPAQ wraps a GUI around the engine, and includes complete source.
Created: 16/07/2004
by Mark NelsonMore...
ImageMagick is a robust collection of tools and libraries offered under a free license to read, write, and manipulate an image in many image formats (over 87 major formats) including popular formats like TIFF, JPEG, PNG, PDF, PhotoCD, and GIF. Programming interfaces are provided for C/C++, Java, Perl, VB, and more.
Version 6.0.3 is shipping in July, 2004.
Created: 10/07/2004
by Mark NelsonMore...
JSPFM supports the standard file operations of creation, editing, copying, moving, deleting, renaming and compression/decompression of files and directories. JSPFM also supports some special file operations specific to certain file types such as transposition and resizing of image type files.
Created: 10/07/2004
by Mark NelsonMore...
wmeTV is a Windows Media Encoder based TV viewing and video capturing application (PVR) suitable for most modern capture cards. Features include scheduling, capturing and viewing at high resolution and remote control support.
Created: 10/07/2004
by Mark NelsonMore...
Use the zipdiff tool when you need to compare the contents of two zip files. It is equally suited for comparing jar files, EAR files, WAR files or RAR files. Run it standalone or as an Ant task. The tool supports three output formats: plain text, XML, and HTML. zipdiff is written in Java.
Release 0.4 is shipping as of June, 2004.
Created: 04/07/2004
by Mark NelsonMore...
The Heirloom Toolchest includes Open Source cpio and tar implementations running on Linux, Solaris, and Open UNIX. cpio is able to read and write all known Unix cpio archive formats, including proprietary ones, and zip files, including support for the zip64 format.
The most recent update of the project was on June 30, 2004.
Created: 04/07/2004
by Mark NelsonMore...
Demasoni is working on a revolutionary new data compression method, using something called the Starr Transform.
Created: 04/07/2004
by Mark NelsonMore...
NxServLiv allow compressed remote X sessions using NoMachine's NX oss libraries. Like ssh terminal but graphical. Work from Modem to Lan with different compression ratios
Created: 04/07/2004
by Mark NelsonMore...
The MP3 Streaming DownSampler for PHP is written with cable modem/DSL users with low upstream caps in mind. Using LAME, it dynamically downsamples a requested MP3 to a bitrate which can be streamed. It doesn't use temporary files, so you don't have to take the time to do any batching, and you just give it a directory with symlinks to your music in a place the Web server can reach. The interface is simplistic and fast, meant for immediate plug and play access.
Created: 04/07/2004
by Mark NelsonMore...
This project is an attempt to port the free Speex voice codec to a pure Java implementation.
Version 0.9.4 is shipping as of June, 2004.
Created: 27/06/2004
by Mark NelsonMore...
Peters Backup is a program for backing up your important data files on to diskette, zip drive, fixed disk or CD/RW. It uses an extremely efficient compression algorithm. It keeps track of all versions of your files in full and incremental backups.
Version 1.16 is shipping as of June, 2004.
Created: 27/06/2004
by Mark NelsonMore...
Zipgenius is yet-another-archiver. Supports 21 different compression formats, plus a pretty long list of extras, such as FTP support, email, backup functions, and more. The long list of features might make you expect a price tag, but ZipGenius is in fact free!
Version 5.5.1.440 of ZipGenius is shipping as of June, 2004.
Created: 14/06/2004
by Mark NelsonMore...
There are two programs named SimplyZip. This is the free one from Germany. This program has an awesome list of supported archives formats.
Version 1.1 is shipping as of June, 2004
Created: 14/06/2004
by Mark NelsonMore...
GraphicsMagic is a branch off of the ImageMagick project. I suppose there are some interesting political machinations behind all that, but for right now you should just know that GraphicsMagick is attempting to provide a stable set of code that can be used in other free and proprietary products. This consists of a big batch of image processing library functions, as well as a command line tool that lets you easily exercise some of those functions.
Version 1.1.2 shipped in June, 2004.
Created: 13/06/2004
by Mark NelsonMore...
When listening to recordings of human speech (like audio books, conference recordings, ...) it can be useful to have the ability to adjust the playback speed without changing the pitch of the recording. This simple command line program can do this for you. Playing a audio book at 150% of its original tempo is still intelligable and saves time, therefore the name of the program.
Created: 13/06/2004
by Mark NelsonMore...
This page describes a program, ent, which applies various tests to sequences of bytes stored in files and reports the results of those tests. The program is useful for those evaluating pseudorandom number generators for encryption and statistical sampling applications, compression algorithms, and other applications where the information density of a file is of interest
Created: 13/06/2004
by Mark NelsonMore...
Your basic free zip program. Includes the normal archiving functions, plus some search, email, and ftp options as well.
Version 2.5 is shipping as of June, 2004.
Created: 06/06/2004
by Mark NelsonMore...
Squashfs is a highly compressed read-only filesystem for Linux (kernel 2.4.x). It uses zlib compression to compress files, inodes and directories. Inodes in the system are very small and all blocks are packed to minimise data overhead. Block sizes greater than 4K are supported up to a maximum of 32K.
Release 2.0 of squashfs shipped in May, 2004.
Created: 31/05/2004
by Mark NelsonMore...
A program by Andrew Frolov on a site dedicated to complete programs that are less than or equal to 256 bytes in length.
Created: 25/05/2004
by Mark NelsonMore...
Zipper is a tool for inspecting the contents of a compressed archive and for extracting.
Version 0.7 is shipping as of May, 2004.
Created: 23/05/2004
by Mark NelsonMore...
Java & MPEG-7 based tools for semantic annotation and retrieval of digital photos and images supporting graph like annotation and content based image retrieval.
Created: 23/05/2004
by Mark NelsonMore...
This page offers very simple but very useful C source code to parse MP3 files. The parser gives detailed info of each frame in the MP3 file. It presents header info, side info and main data corresponding to each frame in the MP3 file. I was not able to find such a tool on the net so I did it myself and now I want to offer it to the world free of cost.
Libarchive is a programming library that can create and read several different streaming archive formats, including most popular tar variants and the POSIX cpio format. The bsdtar program is an implementation of tar(1) that is built on top of libarchive. It started as a test harness, but is quickly moving toward becoming a candidate system tar for FreeBSD
Created: 22/05/2004
by Mark NelsonMore...
The MPEG4IP project provides an MPEG and IETF standards-based system for encoding, streaming, and playing MPEG-4 encoded audio and video.
Version 1.1 is shipping as of May. 2004.
Created: 22/05/2004
by Mark NelsonMore...
ZipInstaller is a bare-bones application framework for the
programmer who doesn't want to learn the painful
intricacies of InstallShield or Microsoft's installer. If
all you need to do is copy some files to a specific folder
and then create a few shortcuts and menu entries, ZipInstaller
is just the guy for you.
Version 1.11 is shipping in May, 2004.
Created: 16/05/2004
by Mark NelsonMore...
Advanced Image Coding (AIC) is an experimental still image compression system
that combines algorithms from the H.264 and JPEG standards. More specifically,
it combines intra frame block prediction from H.264 with a JPEG-style discrete
cosine transform, followed by context adaptive binary arithmetic coding as used
in H.264. The result is a compression scheme that performs much better than JPEG
and close to JPEG-2000.
Created: 15/05/2004
by Mark NelsonMore...
WavPack allows you to losslessly compress (and restore) both 16 and 24-bit audio files in the .WAV format. Unlike "lossy" compression schemes (like MP3) that discard information, WavPack converts the audio data into a more compact form so that the restored files are digitally identical to the original source. It's somewhat like the file compression portion of WinZIP except that it's optimized for audio data. Like other lossless compression schemes the data reduction varies with the source, but it is generally between 25% and 50% for typical popular music and somewhat better than that for classical music and other sources with greater dynamic range.
Created: 15/05/2004
by Mark NelsonMore...
This is the free version of Shorten, which was forked from the commercial version from SoftSound. Not sure about all the legalities here, but I don't think SoftSound is actively selling the commercial version, so this may be your only choice.
Created: 10/05/2004
by Mark NelsonMore...
GPAC is an implementation of the MPEG-4 Systems standard (ISO/IEC 14496-1) developed from scratch in ANSI C.
The main development goal is to provide a clean (a.k.a. readable by as many people as possible), small and flexible alternative to the MPEG-4 Systems reference software. The MPEG-4 Reference software is indeed a very large piece of software, designed to verify the standard rather than provide a small, production-stable software.
GPAC is written in ANSI C for portability reasons (embedded platforms and DSPs) with a simple goal: keep the memory footprint as low as possible.
The project will at term provide a 2D/3D core player, complete MPEG-4 Systems encoders and publishing tools for content distribution.
Version 0.1.4 is shipping as of May, 2004.
Created: 02/05/2004
by Mark NelsonMore...
SIP intends to do imaging tasks such as filtering, blurring, edge detection, thresholding, histogram manipulation, segmentation, mathematical morphology, color image processing, etc.
These operations are useful for problem solving in real-world applications ranging from car motion planning to automatic diagnosis of medical images.
Version 0.3.1 is shipping as of May, 2004.
Created: 02/05/2004
by Mark NelsonMore...
Archive Explorer is a pure VB program that is capable of showing the contents of different archives and some archives can be extracted. Contents can be shown are: ZIP,GZ,TGZ,TAR,ARC,ARJ,RAR,CAB,LZH,LHA. Contents can be extracted are: ZIP,GZ,TGZ,TAR.
Created: 25/04/2004
by Mark NelsonMore...
"Jpegpixi" is short for "JPEG pixel interpolator". It is a command-line utility which interpolates pixels in JFIF images (commonly refered to as "JPEG images"). This is useful to correct images from a digital camera with CCD defects. Jpegpixi is unique in that it tries to preserve the quality of the JFIF image as much as possible
Created: 25/04/2004
by Mark NelsonMore...
OptiPNG is a PNG optimizer that recompresses the image files to a smaller size, without losing any information.
The idea behind this program has been inspired from pngcrush (http://pmt.sourceforge.net/pngcrush), and is explained in detail in the PNG-Tech article "A guide to PNG optimization"
Created: 25/04/2004
by Mark NelsonMore...
Tool for the building of simple avisynth script from which is possible to automate the video compression with any codec and audio files into the formats: Mp3, Ogg and Wav; the tool have also a Compress Test and a Bitrate/size calc.
Created: 25/04/2004
by Mark NelsonMore...
This open source package, e2compr, provides transparent compression and decompression of Linux ext2 file systems.
Version 0.4.44 is shipping as of April, 2004.
Created: 25/04/2004
by Mark NelsonMore...
This looks like the page that contains the latest reference software used by the Joint Video Team as part of the H.264 standardization effort.
Created: 21/04/2004
by Mark NelsonMore...
lesspipe.sh is an input filter for the pager less as described in its man page. The script runs under a ksh compliant shell (ksh, bash, zsh) and allows to view files with binary content, compressed files, archives and files contained in archives. A large and growing number of formats are supported both as plain and compressed files using compress, gzip, bzip2 or zip.
Created: 21/04/2004
by Mark NelsonMore...
AVInfo is a utility for displaying AVI and MPEG (1, 2) information. It returns the length of a clip, FPS, resolution, codec, audio and video bit rate, number of key frames, sound parameters, and the number and type of streams, including detailed information for each, generating a filelist with statistics.
Created: 19/04/2004
by Mark NelsonMore...
BAR Archiver is a free, cross-platform file compression and archiving tool written in Java. It outperforms most of the popular file
compression tools available as commercial utilities.
Compression is based on Burrows Wheeler Transformation and modified Huffman entropy coder. The compression ratio is in par
with most of the commercial grade compression utilities.
Created: 11/04/2004
by Mark NelsonMore...
A free archiver for Win32 that supports a really great list of formats, including the obvious Zip but some from left field as well, such as ARJ, RAR, and 7-Zip.
Reader LS said: Very nice, simple to use (even for experienced users!)
Version 3.4.1.6 is shipping as of April, 2004.
Created: 11/04/2004
by Mark NelsonMore...
Another graphical zip tool. Has some interesting capabilities, including viewing while downloading, uploading to ftp sites, splitting zip files, etc.
Created: 09/04/2004
by Mark NelsonMore...
The unace utility is used for extracting, testing and viewing the contents of archives created with the ACE archiver.
Created: 04/04/2004
by Mark NelsonMore...
This package is used to read DVI files created by TeX et.al. and convert them to PNG files. It claims to be quite fast.
Version 1.0 is shipping as of March 29, 2004.
Created: 04/04/2004
by Mark NelsonMore...
mjpeg-jpegs is a tool for coverting Motion-JPEG files such as the short movies produced by digital cameras to JPEG files and back. Both AVI and QuickTime formats are supported, including audio tracks.
Release 0.1.0 is shipping as of March, 2004
Created: 28/03/2004
by Mark NelsonMore...
QuickTime Alternative will allow you to play QuickTime (.mov .qt) files. This way there is no need to install the offical QuickTime Player. It also supports QuickTime content that is embedded in webpages. The QuickTime plugins include iPIX and QuickTimeVR.
Created: 28/03/2004
by Mark NelsonMore...
Real Alternative will allow you to play RealMedia files without having to install the official RealPlayer. You do need a media player that is capable of playing RealMedia files. The included Media Player Classic supports it. Supported are RealAudio (.ra .rpm), RealVideo (.rm .ram .rmvb), RealText (.rt), and ReadPix (.rp). Not fully supported are: Streaming smil files (.smi .smil) and Realmedia embedded in webpages.
Created: 28/03/2004
by Mark NelsonMore...
Media Player Classic is similar to Windows Media Player 6.4 but with features pertained to minimalist advanced users. It also supports DirectX 9 and VFW drivers for capture. It supports viewing through ActiveX controls of Real and QuickTime files.
Created: 28/03/2004
by Mark NelsonMore...
makeself is a small shell script that generates a self-extractable archive from a directory. The resulting file appears as a shell script (many of those have a .run suffix), and can be launched as is. The archive will then uncompress itself to a temporary directory and an optional arbitrary command will be executed (for example an installation script). This is pretty similar to archives generated with WinZip Self-Extractor in the Windows world. Makeself archives also include checksums for integrity self-validation (CRC and/or MD5 checksums).
Created: 28/03/2004
by Mark NelsonMore...
From the site: Epic24 is a GUI program that I wrote to interactively compare graphic compression codecs against each other. It currently contains JPG, Lossless JPG, JPEG 2000, (Jasper Library Implementation), PNG, John Robinson's BTP and ATP, and finally my own lossless graphics compression called IMPLODE (IMage Predictive LOssless Decoder Encoder).
Created: 27/03/2004
by Mark NelsonMore...
APT (Adaptive Prediction Trees) image coding supersedes BTPC (Binary Tree Predictive Coding). It is a general-purpose compression scheme for all types of still image. It does both lossless and lossy compression of monochrome and color images from 1 to 16 bits per component. Its performance on all image types is often close to that of the best alternative.
Created: 27/03/2004
by Mark NelsonMore...
This code shows how to use the freeware InfoZip Zip32.DLL and Unzip32.DLL files from the http://www.cdrom.com/pub/infozip/ website. The InfoZip DLL's are open-source DLL's that are available for programmers to utilise free of charge. They are standard C DLLs and were very tricky/impossible to interface with VB until VB5/6 offered the 'addressof' operator.
Created: 20/03/2004
by Mark NelsonMore...
mp3ck is a portable utility for checking the consistency of MPEG streams or files. The primary accent of the check is on the seamless flow of frames and tags since most MPEG defects introduced by aborted network transfers manifest theirselves in breakage of that flow.
Created: 20/03/2004
by Mark NelsonMore...
This product seems to have chosen the obvious name, so that's a good start. It appears to be an archiver for *NIX that can work with tgz, tar, bz2, zip, and jar archives. It's Python, and it appears to be free.
Version 1.9.4 is shipping in March, 2004.
Created: 17/03/2004
by Mark NelsonMore...
cabextract is a GPLed program which extracts Microsoft Cabinet (.CAB) archives. It fully supports both the MSZIP and LZX compression formats. It can also extract multi-part archives and self-extracting archives.
Release 1.0 shipped in March, 2004
Created: 17/03/2004
by Mark NelsonMore...
DACT is a brute force compressor written by Roy Keene that tries out a whole library of compression routines on a given file, and then simply picks the best performer.
Release 0.8.36 was shipping in early March, 2004.
Created: 07/03/2004
by Mark NelsonMore...
This program is used to read and manipulate the RDF metadata that can be stored in JPEG images.
Version 2.0 is shipping as of February, 2004.
Created: 22/02/2004
by Mark NelsonMore...
GermaniXEncoder is a universal Transcoder for various sound formats like MP3, MP2, Real Audio, WMA, Ogg Vorbis, ALF2CD, DSP, GSM, G.721, G.723, G.726, RAW, PCM, ADPCM, uLaw, aLaw, MPC, and Monkeys Audio. In addition, the Encoder has a transformer for some transforming features, an Audio Recorder for recording from all input sources to mp3, mp2, pcm, adpcm, wma and ogg-vorbis. You can also split large MP3 files with their CUE sheets into songs.
Version 1.80.1195 RC2 was shipping as of Februaru, 2002.
Created: 22/02/2004
by Mark NelsonMore...
This is a suite of programs which will help you to convert your existing mp3 files into ogg. The suite includes a text and a graphical frontend. Requires mpg321, mp3info, oggenc, vorbiscomment (zenity for gui).
Created: 22/02/2004
by Mark NelsonMore...
KDar is the KDE Disk Archiver. It is a convenient graphical interface to Denis Corbin's libdar archiving and backup C++ library. You can safely backup (with compression if you like), view and restore files using KDar, along with a few easy UNIX commands for mounting and burning CD-R's, Zip and Jazz drives, DVD-R's, floppies, or any other disk-based storage media.
Created: 14/02/2004
by Mark NelsonMore...
rzip is a compression program, similar in functionality to gzip or bzip2, but able to take advantage long distance redundencies in files, which can sometimes allow rzip to produce much better compression ratios than other programs. The original idea behind rzip is described in my PhD thesis (see http://samba.org/~tridge/), but the implementation in this version is considerably improved from the original implementation. The new version is much faster and also produces a better compression ratio.
Created: 14/02/2004
by Mark NelsonMore...
MJPEG tools is a suite of programs which support video capture, editting, playback, and compression to MPEG of MJPEG video. Edit, play and compression software is hardware independent. Capture supports MJPEG hardware (Buz, Miro DC10+ etc).
An upgrade of mjpegtools to version 1.6.2 was issued in February of 2004.
Created: 08/02/2004
by Mark NelsonMore...
GOPchop is an MPEG2-PS editor that cuts on GOP boundries so that the resulting MPEG2-PS file does not need to be re-encoded when saving the resulting desired frames. It is useful for editing commercials out of MPEG2 TV capture files.
Created: 08/02/2004
by Mark NelsonMore...
This is a Win32 script that can be used to compress and/or delete files after a certain amount of time. Nice and simple.
Version 1.2 shipped in January, 2004.
Created: 01/02/2004
by Mark NelsonMore...
A pre-compression transform by Przemyslaw Skibinski, somewhat along the lines of Star Encoding.
Version 3.0 of this program is shipping as of February, 2004.
Created: 01/02/2004
by Mark NelsonMore...
An archiver program designed to run under Linux with the KDE desktop. Looks like it supports tar, zip, bz2, and gz files. Released under the GPL.
Version 3.0.10 is shipping as of January, 2004
Created: 26/01/2004
by Mark NelsonMore...
Compression is concerned with detecting patterns in order to reduce redundancy. Complearn is an attempt to take that pattern-recognition ability and use it for different ends.
Created: 18/01/2004
by Mark NelsonMore...
A student group in Paris has set themselves the goal of creating a DVD/MPEG player that will work for everyone, everywhere. Linux, Max, and Win32 ports are available right now. October 2001 sees the release of their player and server software.
Version 0.7 of the player is shipping in January, 2004.
Created: 11/01/2004
by Mark NelsonMore...
A free program to deal with image formats in popular medical formats, including DICOM, SPM, PNG, and GIF.
Version 0.9.1 of (X)MedCon shipped in January, 2004.
Created: 11/01/2004
by Mark NelsonMore...
A visual tool that lets you degrade image files with visual feedback on how you are doing. A good, easy way to minimize the size of files before using them on your web page, tec.
Created: 11/01/2004
by Mark NelsonMore...
Foobar2000 is a relatively new audio player for Windows PCs. It seems to be attracting a little bit of interest among the literati, perhaps because it is mostly open sourced. It has a nice list of features, including tremendous list of codec support, as well
as some unusual ones, such as the ability to play files in Zip archives.
Created: 11/01/2004
by Mark NelsonMore...
ZipDB is a program that allows databases to be made easily and efficiently using compressed zip files. An easy-to-use gui is the key feature allowing quick access to all files in the archive.
Created: 04/01/2004
by Mark NelsonMore...
A command line program for making backups of directory trees and files. This freeware is ported to Linux, Windows, and Solaris.
Version 2.0.2 shipped in December, 2003.
Created: 14/12/2003
by Mark NelsonMore...
This project on the the Code Project web site shows you how to build a roll-your-own media player for Win32, using the standard multimedia API.
Created: 14/12/2003
by Mark NelsonMore...
This project aims to define a standard for the lossless compression of MIDI patch files. From the title, you might guess that the lossless audio compression is performed using FLAC - other binary data is compressed w/zlib.
Created: 14/12/2003
by Mark NelsonMore...
This is a web proxy that compresses pages using standard gzip compression, making them a lot smaller for serving up over low-speed connections. Not only does it convert text to gzip encoding, it also converts images to low-quality JPEGs for maximum space savings.
Version 1.3b is shipping as of November, 2003.
Created: 26/11/2003
by Mark NelsonMore...
This web site is run by the author of MacLHA, a drag and drop version of LHA for Mac OS. You can also get access to a drag and drop LHA expander for Mac OS here.
Created: 24/11/2003
by Mark NelsonMore...
A site that has a port of a drag and drop version of LHA to Mac OS X. My Japanese referrer tells me this version does not support MacBinary so resource forks will be lost by this program.
Created: 24/11/2003
by Mark NelsonMore...
WinGZip is an small freeware utility for working with files produced by gzip utility (usually it's files with .gz or .tgz extension) and also create such files. Main features include the compressing, decompressing and testing the integrity of gzip files.
Created: 24/11/2003
by Mark NelsonMore...
WinBZip2 is an small freeware utility for working with files produced by bzip2 utility (usually it's files with .bz2 extension) and also create such files. Main features include the compressing, decompressing and testing the integrity of bzip2 files.
Created: 24/11/2003
by Mark NelsonMore...
SNG (Scriptable Network Graphics) is a minilanguage designed specifically to represent the entire contents of a PNG (Portable Network Graphics) file in an editable form. Thus, SNGs representing elaborate graphics images and ancillary chunk data can be readily generated or modified using only text tools.
Version 1.0.2 shipped in November, 2003.
Created: 16/11/2003
by Mark NelsonMore...
The software reviewer at the SlaughterHouse speculated that commercial developers of zip programs ought to just pack it in when they see how good QuickZip is. If you agree or disagree, why not post an evaluation here so we can benefit from your experience? It seems to be free, plus has support for Chinese and several European languages.
Release 3.05 is shipping as of November, 2003.
Created: 16/11/2003
by Mark NelsonMore...
Ahmed Ismaiel Zakaria has created a Win32 Zip program that supports Zip files, and is promising to soon support JAR, CAB, ARJ, RAR, ACE, and so on. Yes, there are many other programs just like it, but SmartZip appears to be free and the author is promising to release the source code. (Of course, he's violating the GPL if he doesn't offer the source code even with these early releases.) This project is posted on the venerable and esteemed CodeProject site, the author appears to be actively working on the project and communicating on the open forums.
Last updated November 6, 2003. Oh, wouldn't it be grand if the author posted release notes and a shipment history!
Created: 10/11/2003
by Mark NelsonMore...
This free Zip manager program supports a raft of archiver formats, has full shell integration, and includes support for the Zip64 extensions.
Created: 09/11/2003
by Mark NelsonMore...
Zipserver is a little HTTP server that serves up static documents from inside Zip files. Great way to put manuals or archived documents on line, don't you think?
Created: 08/11/2003
by Mark NelsonMore...
This product advertises itself as a simple S3TC texture compression
tool. The description says that it loads an image file into your video card's RAM, then instructs the video card to compress it.
Created: 02/11/2003
by Mark NelsonMore...
A menuing system for playing MPEG movies under Linux. I'm not able to determine exactly what it does, it's hard to find a good overview. It was originally designed to work with a specific MPEG card, but has apparently grown beyond that.
Created: 01/11/2003
by Mark NelsonMore...
The latest in the series of multi-model compressors from Matt Mahoney. This improves on PAQ3n's remarkable Calgary corpus performance by an additional 12K, at some expense in speed. Takes a whopping 84MB at runtime!
Created: 26/10/2003
by Mark NelsonMore...
Matt Mahoney says that with recent improvements by Serge Osnach, PAQ3N does better on the Calgary Corpus than any other open source compressor.
Created: 18/10/2003
by Mark NelsonMore...
DualStream is aimed at filling the big gap between perceptual coding and lossless coding. The goal is to offer real transparent audio coding (not only perceptually transparent) at half or less the bitrate generally used by lossless coding, and also to permit progressive consistent increase of the quality level, until lossless coding is reached. To eliminate the problem of choosing between lossless and near lossless, DualStream has an option to create a correction file, which may be eventually stored separately and used at a later time to restore the original. The advantage is that the two files (near lossless and correction) have together approximately the size of the lossless coded original file.
Created: 12/10/2003
by Mark NelsonMore...
Star is a free tar program, and boasts that it is the first free tar program to support POSIX.1-2001 extended tar headers.
Created: 09/10/2003
by Mark NelsonMore...
OptimFROG is a lossless audio compressor. The author claims to have superior lossless compression ratios, includes numerous player plugins, and is free for non-commercial use.
Created: 09/10/2003
by Mark NelsonMore...
GNUNetPress - Network compression client/server software. Compresses data over slow networks to save on the cost of bandwidth. Server is developed for Unix platforms, The client will run on Linux or Windows based PCs.
Created: 28/09/2003
by Mark NelsonMore...
A general delta compression/differencing suite for any platform that supports autoconf/automake, written in C, w/ builtin support for reading,writing, and converting between multiple file formats.
Created: 28/09/2003
by Mark NelsonMore...
The well-respected ARJ archiver is now available as Open Source software. This portable version targets DOS, OS/2, Linux, and FreeBSD. See the project home page for binary versions of previous commercial/shareware versions. (These versions were free for personal use, but not commercial.)
ARJ 2.78/3.10 build 17 is shipping in September, 2003.
Created: 14/09/2003
by Mark NelsonMore...
This open source Linux project converts image files (JPEG, GIF, PNG, etc.) to Encapsulated PostScript, in what is supposed to be an efficient manner.
Created: 12/09/2003
by Mark NelsonMore...
Free PDF Compressor that removes duplicate PDF objects, optionally takes advantage of new compression features of latest PDF specification (1.5), and optionally takes advantage of a new proposed format called "Compact PDF" that for many classes of documents compresses 30 - 60% better than what is possible in PDF 1.5.
Note: Navigate up two levels to get to Tom's download page.
Version 2.2 is shipping as of February, 2004.
Created: 12/09/2003
by Mark NelsonMore...
This is a console-mode Linux program built for processing of video streams. Currently supported modules provide support for DVD format, DV, DivX, and more. Lots of good stuff in here for serious video production bloke.
Version 0.6.10 shipped in September, 2003.
Created: 10/09/2003
by Mark NelsonMore...
An Open Source Suffx Tree implementation. Looks as though this might be oriented towards teaching applications, as it is an interactive application, not just an implementation of the data structure.
Created: 07/09/2003
by Mark NelsonMore...
jzip.org is a WinZip like program written in java. The project aims to provide the ultimate zip tool free of proprietary code and portable to virtually any modern operating system. Preconfigured binary packages are provided for Windows 9x, Windows 2000 and of course for Linux (that one should fit any Unix-like system).
Release 0.20 w/numerous bug fixes shipped in September, 2003.
Created: 04/09/2003
by Mark NelsonMore...
Frank Eden's article on The Code Project web site is summed up quite well by the title. About the only thing I have to add is to point out that it is designed to work with JPEG images.
Created: 01/09/2003
by Mark NelsonMore...
MPlayer is a movie and animation player for Linux based on libmpeg2 (mpeg2dec), and the Avifile library. It uses mpeg2dec/libmpeg2 for MPEG decoding. The supported file formats are MPEG 1/2 (MPG, DAT, BIN, VOB), and AVI/ASF/WMF(Mpeg/PCM/AC3/DivX/MS-ADPCM/aLaw audio, and MPEG4/DivX/Indeo/CVID/WMF video codecs, and many more). It supports hardware YUV colorspace conversion, and scaling via mga_vid/syncfb devices, or the X11 Xv extension.
Version 0.91 is shipping as of August, 2003.
Created: 18/08/2003
by Mark NelsonMore...
RealNetworks has created a semi-freeware project dedicated to creating a highly capable multmedia client for UNIX and Linux systems.
Created: 18/08/2003
by Mark NelsonMore...
This nifty program searches through a normal or compressed mailbox looking for strings. Supports Gzip, Bzip2, and tzip formats.
Created: 18/08/2003
by Mark NelsonMore...
This Win32 app probes your AVI files and returns a nicely formatted GUI telling you all sorts of interesting things such as sample rate, codec used, framerate. Oh, and it seems to be written for the French speaker.
Created: 08/08/2003
by Mark NelsonMore...
Supplies you with detailed info about the attributes of all sorts of media files, naturally including MP3, AVI, WAV, MPEG2, and much, much more. Looks to be Win32 only.
Created: 08/08/2003
by Mark NelsonMore...
This is a set of tools that are used to analyze MPEG streams, and are intended to help developers check out the compliance of their work. There are three different tools that help you poke around in MPEG streams, see their contents, and dump their headers. Linux.
Version 0.7a is shipping in July, 2003.
Created: 28/07/2003
by Mark NelsonMore...
OTR stands for "Old Time Radio". The owners of this project want to be able to listen to classic mono AM radio recordings on their Sharp PDAs.
Created: 23/07/2003
by Mark NelsonMore...
Hash Zip attempts to store 256 byte blocks by hashing them down to 30 byte blocks. Decompression seems problematic.
Created: 19/07/2003
by Mark NelsonMore...
UHBC is a blocksorting compressor optimized for high compression ratios. The program uses recent research results by S. Deorowicz and J. Abel for improved second stage processing after the BWT. Some extensions and sophisticated modeling provide top compression ratios, giving the best known result for Calgary Corpus (2.208 bps average). UHBC is free for non-commercial use. No source available.
Reader Grebnov I. had this to say: Compression is very good, but too slow + no source code..
Created: 19/07/2003
by Mark NelsonMore...
Advertises itself as the "The Best Free Zip Utility on the Net!" Free registration is optional, enables search utility which provides some payback.
Created: 06/07/2003
by Mark NelsonMore...
This product analyzes and adjusts MP3 files so that they all have the same volume. It appears to be free.
As of Septembery, 2003, Version 1.4.3 is shipping.
Created: 06/07/2003
by Mark NelsonMore...
A media player that comes in a free and pay version. Although it's labeled as a media player, it looks to me as though this is primarily inteded to be used as a DVD player.
Created: 04/07/2003
by Mark NelsonMore...
My own version of PKZIP. It's quite a bit slower, and it's a bit of a memory hog... but for good reason. KZIP creates smaller .ZIP files than PKZIP with maximum compression enabled! No, I didn't cheat. You see... during compression, PKZIP gives up after it has found so many matches - this is why it is so fast, and also why KZIP can beat it. .ZIP files created with KZIP are compatible with all of the latest .ZIP software - just that if you use KZIP, your file will be a few percent smaller. Decompression is still very fast, making KZIP the perfect tool for shaving off seconds from download times.
Note: Reader Nicolas gives this product a 5-star rating, and recommends you use it with Ken's other produt, ZIPMIX.
Created: 02/07/2003
by Mark NelsonMore...
Another Ken Silverman utility. Ken has this to say about ZipMix:
Sometimes, when you run 2 different .ZIP programs on the same data (PKZIP & KZIP for example), some files get compressed better in one program, while other files get compressed better in the other. ZIPMIX will take the best files from each one and create a new output file, which is guaranteed to be equal to or smaller in size to both of the input files.
OpenShiiva does just one thing: converts VOB files to MPEG-4 format. It does this on MacOS X. VOB files are wrapped MPEG-2 format streams, such as you might find on DVDs. You can expect a nice decrease in size when going from VOB to MPEG-4, so this is ideal for archiving DVD files to your hard drive.
Version 0.8.6 is shipping as of June, 2003.
Created: 01/07/2003
by Mark NelsonMore...
Damascus Porteng wrote this downsampler that will take an input MP3 stream and resample it at a lower bit rate. Looks like open source that will run on *NIX systems.
Created: 28/06/2003
by Mark NelsonMore...
This cool program uses either Zip file or JPEG file to encrypt some of your data. I think it's free, email me if I'm wrong.
Created: 24/06/2003
by Mark NelsonMore...
This is an archiver. That's all I know - the web page is in Russian, and the Babel Fish translation didn't give me too much additional information.
Created: 24/06/2003
by Mark NelsonMore...
This is a Russian language web site, so I'll have to apologize in advance for any mistakes. As far as I can tell, this is a PPM-based archiver. I can't tell if it's free or not, so I'm listing it as both!
Created: 21/06/2003
by Mark NelsonMore...
This program is designed to accurately create a difference file between two packages, allowing for an update with a minimal source file.
Created: 19/06/2003
by Mark NelsonMore...
This project aims to compress the graph created by spidering the web. They claim 3.8 bits per link, which seems pretty incredible to me.
Created: 15/06/2003
by Mark NelsonMore...
Compreso implements compressed sockets using an LZH algorithm, as implemented by Rolando Herrero. It does this cooperatively with the Win32 socket library, so you can only run this code under Windows. Freeware.
Created: 09/06/2003
by Mark NelsonMore...
CoolPlayer is a nice, fast MP3 player targeted to Windows. This Open Source project is a nice piece of work, and the team has created a player that has the features to compete with good commercial players.
Build 214 of CoolPlayer shipped in June, 2003.
Created: 08/06/2003
by Mark NelsonMore...
Freezip, by Dariusz Stanislawek, is a completely
free Win32 application that does the usual job of zipping and
unzipping files, and includes full integration with Windows
Explorer.
Created: 06/06/2003
by Mark NelsonMore...
This open source Linux project performs a very specialized task. It is used to repair images that have single pixel errors, such as that you might get from a camera with a single bad spot on the CCD. It interpolates from the neighboring pixels to create a new value, then inserts it without a decompress/recompress cycle. Pretty neat!
Created: 03/06/2003
by Mark NelsonMore...
This program allows you to convert DivX movies encoded with WMA audio to a format the can be played on Mac OS X. Free OS X program.
Created: 02/06/2003
by Mark NelsonMore...
Software to convert the proprietary KDC files produced by Kodak digital cameras into JPEG or TIFF format. Appears to work under Linux only.
Created: 30/05/2003
by Mark NelsonMore...
UFUP advertises itself as a "decompression utility that handles common Unix package formats such as bzip2, gzip, and tar."
Created: 30/05/2003
by Mark NelsonMore...
The DivX codec naturally supports embedded subtitles, and this program lets you manipulate them. The web site says this includes moving, merging, and converting to ISO-88591-1 and -2.
Created: 28/05/2003
by Mark NelsonMore...
iRad is an open source project written to view DICOM files
on your Mac systems running OS X. For those of you not in
the know, DICOM is a set of standards for storing and accessing
medical imagery. It is written to help with the unique requirements
that the medical industry has for imaging.
Version 1.4 is shipping in a beta version in May, 2003.
Created: 26/05/2003
by Mark NelsonMore...
This is a somewhat unique utility that will only be useful to those of you working on Visual Studio programming projects. Running it erases all your temporary project files, then zips up all the leftovers so you can backup your work.
Created: 26/05/2003
by Mark NelsonMore...
A free Win32 media player that can handle quite a few popular audio and video formats.
Reader Brian H. says: Incredibly fast, and has just the features that I need.
Created: 25/05/2003
by Mark NelsonMore...
Tar and tar.gz files are very familiar to *NIX users, but not to everyone using Windows. To help those folks out, ezGZ has been created, which manipulates these archives in a nice GUI-friendly way. Source included.
Created: 19/05/2003
by Mark NelsonMore...
This is a free Linux program that allows you to edit your compressed video files. It is still in beta, and the docs and online help are very minimal at the time I'm writing this.
Version 0.90 is shipping as of May, 2003.
Created: 17/05/2003
by Mark NelsonMore...
An effort to develop a nice QuickTime client for the Linux world, along with the possibility of an encoder and more.
Beta release 0.5 of the client is shipping as of May, 2003.
Created: 17/05/2003
by Mark NelsonMore...
An Open Source Linux project to create a personal Digital Video Recorder. Records and compresses in real time, supports a variety of video capture devices.
Created: 08/05/2003
by Mark NelsonMore...
A set of tools to manipulate OGG Media Streams. The command line tools provide information about the stream, and allow you to extract from or create/merge streams.
Version 1.0.2 is shipping as of May, 2003.
Created: 08/05/2003
by Mark NelsonMore...
This open source project is an attempt to create a replacement for GraphEdit, a tool Microsoft provides in the DDK.
Created: 04/05/2003
by Mark NelsonMore...
This is an open source Digital Video Recorder that aims to turn your Linux system into a TiVo equivalent. This is an ambitious project which has already built up a nice feature list. A huge wish list of features-in-waiting is ready for any developers willing to step into the breach.
Version 1.3.2 is shipping as of April, 2003.
Created: 28/04/2003
by Mark NelsonMore...
ABC is a free data compression program based on the Burrows-Wheeler transformation. The source code is free for academic, research and educational use as depicted in the Abel Public License (APL). The program is developed in DELPHI as a command line program just like GZIP.
Update: Jurgen has released the source code for ABC at long last! The Delphi source is available for download from the web site and can be used under his own APL.
Created: 25/04/2003
by Mark NelsonMore...
This is an Open Source Linux project that lets you create SVCDs from AVI or MPEG input. It provides a nice GUI front end all the way through the process, including burning the CD.
Created: 21/04/2003
by Mark NelsonMore...
VLC is an Open Source multimedia player that supports your usual mix of audio and video formats. Support is currently included for MPEG-1, -2, -4, mp3, ogg, and more. The site includes precompiled binaries for a really nice range of platforms, including Windows, Mac OS X, varios Linux flavors, and even BeOS!
Version 0.5.3 of this player is shipping as of April, 2003.
Created: 17/04/2003
by Mark NelsonMore...
A backup program that uses the standard Zip format for compression. Yes, you can do backups with just a Zip program, but then you wouldn't get all the cool options here, including disk spanning options, a nice GUI, password options, and more. This product comes in a freeware and shareware version.
Back4Win 2.5 and Back4Win 2.7 are shipping as of April, 2003.
Created: 15/04/2003
by Mark NelsonMore...
FreedomAudio is a free Open Source package that lets you stream MP3 and Ogg Vorbis files from your web site. It renders audio using a small Java plugin. The nice part about using a plugin is that you only have to download an install this once. Freedom Audio also now supports a plugin-free mode, but apparently this results in reduced fidelity.
Version 1.08 Build 20 shipped in April, 2003.
Created: 15/04/2003
by Mark NelsonMore...
From the web site: gtranscode is a GTK+ GUI (graphical use interface) front-end for transcode in order to make this powerful tool easier to use. transcode is a powerful video and audio processing tool that can read in just about any format of video and/or audio and convert to just as many different formats. In addition to transcode's extremely flexible modular concept for reading/writing different formats and codecs, it can apply filters, do re-sampling, resizing, cropping, and more.
Version 0.1.5 is shipping in April, 2003.
Reader Erin S. raves about gtranscode: Excellent usability, easy to install, and not only supports all the major functions of transcode, but anything it doesn't support, you can add manually...the most versatile transcode yet!
Created: 15/04/2003
by Mark NelsonMore...
From the web site:crip is a terminal-based ripper/encoder/tagger tool for creating Ogg Vorbis/FLAC/MP3 files under UNIX/Linux. It is well-suited for someone seeking to make a lot of files from CDs and have them all properly labeled and professional-quality. One thing to note is that the author of this free package has removed MP3 support, and limits you to Ogg Vorbis or FLAC for encoding.
Version 3.4 is shipping as of April, 2003.
Created: 15/04/2003
by Mark NelsonMore...
From the site: Yet Another Avi Info is one of the best tools to display information about your avi files. You can see data like the framerate, the used codecs, the running time, the author information and the exact bitrate of video and audio. You can also synchronize your video and audio stream in a very comfortable way. This appears to be a Windows-only project right now.
Version 2.0.1.469 is shipping as of April, 2003.
Created: 14/04/2003
by Mark NelsonMore...
A freeware MP3 encoder for Mac OS X. Uses the LAME encoder to do all the work, provides a nice GUI front end for all that.
Shipping version 0.5.2, still in beta, as of April 2003.
Created: 05/04/2003
by Mark NelsonMore...
Vlorb is a high-quality Audio CD to Ogg Vorbis encoder. It does this by operating as a console front end to cdparanoia and CDDB on Linux systems.
Vlorb 1.0pre9 shipped at the end of March, 2003.
Created: 04/04/2003
by Mark NelsonMore...
SoX aims to be the Swiss Army Knife of sound processing programs. It shows up on the data compression radar by virtue of the fact that SoX is able to convert between a wide variety of compressed formats, ranging from MP3 and Ogg to ADPCM and linear PCM. SoX has ports to a really nice variety of platforms, including Win32, Linux, NetBSD, and more.
Release 12.17.4 was shipping as of March, 2003.
Created: 03/04/2003
by Mark NelsonMore...
This is an open source tool that is described as a Java based archiving tool that is ideal for housekeeping tasks such as backups, pruning and more. Part of the archiving task is the ability to create zip archives, which explains its presence here.
Version 1.0 of Jarchiver is shipping as of March, 2003.
Created: 03/04/2003
by Mark NelsonMore...
Xine is a free gpl-licensed video player for unix-like systems. It plays mpeg-2 and mpeg-1 system (audio + video multiplexed) streams,
mpeg elementary streams (audio/video only, e.g. mp3 files) and
AVI files (using win32 codec dlls). Xine plays the video and audio data of the stream and synchronizes the playback of both. Depending on the properties of the stream, playback will need more or less processor power, full frame rate for mpeg-2 has been seen on a 400 MHz P II system.
Xine is on beta 9 as of March, 2003.
Created: 01/04/2003
by Mark NelsonMore...
XVidQP is a tool that is designed to tell you something about the quality of an MPEG-4 stream. It does this by giving you a batch of reports, including:
Quantization values of I-Frames and P-Frames
Average quantizer value of I-Frames and P-Frames
Graphical histogram distribution of global clip quantizers
Minimum and maximum frame sizes of all frames
It looks right now like this tool is only shipping for Win32.
Beta 3 was shipping as of March, 2003.
Created: 31/03/2003
by Mark NelsonMore...
A description of how to control WinAmp from an external program. As a bonus, the techniques work for Sonique 1.x as well. Daniel Bright seems to have come up with this totally via reverse engineering.
Created: 27/03/2003
by Mark NelsonMore...
The author of this program, Philippe Laval, says You are looking for an application to encode your sound files in MP3, DropMP3 is done for you.. The program runs on MacOS, uses the LAME encoder, and is released under the GPL. Note that the web page is more or less duplicated in English and French.
Version 1.0.6 is shipping as of March, 2003.
Created: 26/03/2003
by Mark NelsonMore...
Bob Crispen has created a GUI wrapper for Gzip so that Win32 users can take advantage of this fine piece of free software. Naturally, Win-GZ is free as well.
Version 1.2 shipped in March of 2003.
Created: 22/03/2003
by Mark NelsonMore...
This Open Source Linux project does one thing and one thing only: it converts a series of JPEG files to an AVI MJPEG file. On the SourceForge tracking system this project is labeled as being Beta, but it is up to release 1.2, so I'm guessing this is no longer the case.
Version 1.2 is shipping as of March, 2003.
Created: 22/03/2003
by Mark NelsonMore...
This mp3 player uses the DJGPP C compiler to port the MPG123 player to MS-DOS. Binaries and source available. Version 3.0 appears to have been worked on in 2002, but no history file seems to be available.
Created: 22/03/2003
by Mark NelsonMore...
From the SourceForge development page for DJWrap: The DJWrap format is an effort to create an open format for combining several MPEG audio streams into one, without losing information about the original files and without disturbing the stream with erroneous or misplaced data.
Version 0.9.2 is shipping as of March, 2003.
Created: 19/03/2003
by Mark NelsonMore...
mp3record is a command-line utility for recording any audio (system mixer, input, mic, etc.) directly to an mp3 file on a linux system. It can run for a set interval and shut itself off. Ideal uses for this script would be recording streams, meetings, etc.
Release 1.3 is shipping in March, 2003.
Created: 15/03/2003
by Mark NelsonMore...
John Robinson's page on BTPC, which includes documentation, samples, links, and source. BTPC is designed to do both lossy and lossless compression of images.
John updated this package to version 5 in March, 2003.
Created: 13/03/2003
by Mark NelsonMore...
Another company determined to swim upstream with a commercial media player. Although in this case, jetAudio Basic is free, jetAudio Plus is the the commercial product. You'll pay for the upgrade if you decide you need support for creating MP3 and MP3Pro files, broadcasting MP3 files, and converting files to MP3 or MP3Pro.
jetAudio has a nice looking UI with some alternative skins. Version 5.01 is shipping as of March, 2003.
Created: 11/03/2003
by Mark NelsonMore...
EZ Transcoder is a wrapper for three pass encoding with mencode designed specifically for transcoding existing MPEG2 files (such as those captured by a TV Capture card) to DivX/MPEG4 format. It is currently a perl console app.
EZ Transcoder 0.2 shipped in March, 2003.
Created: 07/03/2003
by Mark NelsonMore...
Your Microsoft Xbox is a great gaming platform, but it also has the capability to do much more. What a bargain it would be if you could use it as a digital media player, serving up MP3 files across the network, perhaps with nice videos on the high-definition outputs. All this becomes possible with just two things. First, you need to get a copy of the free Xbox Media Player, which lets you play DVDs, Internet Radio, MP3 files, etc. Second, the hard part: you need to get an Xbox Modchip, which lets you bypass Microsoft's security restrictions and do as you please with your hard-purchased computer.
Version 2.3 is shipping as of February 15, 2003.
Created: 06/03/2003
by Mark NelsonMore...
The author created this site to make LZOP readily available. The page has links to download binaries, plus links to other LZO and LZOP sites.
Created: 26/02/2003
by Mark NelsonMore...
mod_zipvfs is an Apache2 module, that gives the httpd server the ability to read and browse zipped archives and allows traversal of their content like a virtual filesystem. It is very useful for browsing large html-based documentation without need of decompressing.
Created: 18/02/2003
by Mark NelsonMore...
Guntar is the lazy man's decompression, untar, utility. Do you download a lot of source? Do you keep forgetting the tar flags to decompress zipped archives? If so Guntar is for you.
Looks as though the 0.4.2 beta release of Guntar shipped at the end of January, 2003.
Created: 17/02/2003
by Mark NelsonMore...
DVDx is a tool that allows you to convert DVD to VCD2.0 , SCVD1.0 or AVI (DivX...) in one step (Including multiplexing, splitting). It produces good quality movies in AVI , MPEG1/2 format and you don't need to have 5GB or more free on your hard disk. DVDx has been designed especially for inexperienced users, it is a simple and intuitive program.
Version 2.1 of DVDx shipped in January of 2003.
Created: 17/02/2003
by Mark NelsonMore...
FLAC is an open-source project which specifies a lossless compressed audio format and provides an encoder, decoder, and several player plugins. Aside from yielding better compression than Shorten, the format supports sample-accurate seeking and many other features useful for streaming and archival.
The format is supported by a number of software and hardware players.
Reader Colin B. says: Incredible lossless audio compression, depending on the source, of course. I have seen high-quality speech recordings compressed to 10% of the original size, losslessly..
FLAC 1.1.2 released in February, 2005.
Created: 15/02/2003
by Mark NelsonMore...
Aftex Software makes a Java version of Bzip2. This includes input and output stream classes, which can be used in other Java applications. The program has both a GUI and command line interface.
Created: 03/02/2003
by Mark NelsonMore...
This page contains links to sample code and test data for implementing the JPEG 2000 standard. Looking for conformance files? This is the place. Looking for working implementations? You can find several here.
Created: 19/01/2003
by Mark NelsonMore...
BonkEnc is an audio CD ripper and an encoder for various audio formats. It can produce Ogg Vorbis, MP3 and BONK files. More formats are available through plug-ins.
Created: 19/01/2003
by Mark NelsonMore...
HP offers some free JPEG-LS software, including a Windows DLL, PhotoShop plugin, and reference executables good on several platforms, including Windows, Linux, Solaris, and of course, HP-UX.
One anonymous reader dissed the package with this comment: Not particularly user friendly.
Created: 16/12/2002
by Mark NelsonMore...
mgzip is a program that makes use of SMP machines and zlib to use as many processors as you have to quickly compress files into gzip compatible format. mgzip only compresses; gunzip must be used to uncompress the resultant file. I have been able to compress files three times faster than standard gzip on a 4 processor Alpha 4100 using three worker threads. Currently, mgzip will compile and run on Digital Unix 4.0[BD], Linux with a suitable pthread library, and AIX 4.3. Porting to other Unices with pthread libraries should be an easy task, and may be as simple as compiling.
Created: 13/12/2002
by Mark NelsonMore...
Bob Carpenter has created a nice Java package that implements a PPM/arithmetic coding compression system. This page includes links to the source code, javadocs, and a fair amount of tutorial material. Very complete!
Created: 11/12/2002
by Mark NelsonMore...
Will McKee has released this as freeware - includes complete source to a string substitution compressor. From the description it sounds as though it's variant on LZSS, but I'll defer to anyone willing to do a real analysis.
Created: 09/12/2002
by Mark NelsonMore...
The FFmpeg project consists of two main parts: FFmpeg, which encodes and decodes the multimedia streams, and FFserver, which provides streams via HTTP for various multimedia clients. FFMpeg is completely portable since it does not rely on proprietary DLLs. The library libavcodec, which contains all the ffmpeg codecs, can be reused in any program licensed under the GNU General Public License.
Version 0.4.8 is shipping in September, 2003. Tons of new stuff in 0.4.7, a bit more in 0.4.8.
Created: 30/10/2002
by Mark NelsonMore...
The cwenc utility is primarily a tool for musicians working with Cakewalk music production software, such as Home Studio and Sonar. cwenc enables you to export your original music to a compressed audio file format, such as MP3 or Ogg Vorbis, from within the mentioned Cakewalk products. cwenc is a direct replacement for the time-limited demo-version of Cakewalk's commercial MP3 encoder program, which is packaged with both Home Studio and Sonar.
Created: 30/10/2002
by Mark NelsonMore...
The MP3elf is a low-cost Ethernet connected MP3 player that receives a MP3 stream from a local area network server and delivers it to amplified speakers or a Hi-Fi system. You can have a single source of MP3 files in your home or office, and browse through playlists from any MP3elf. The Universal IR receiver allows the MP3elf to respond to one of your existing Remote Controls (or use the on-board pushbuttons) and the LCD interface can display your very own choice of information. The elfServer software design allows compatibility with a range of different front-end options. As it is Java based, it can run on Windows, Macintosh, or Linux machines.
Created: 30/10/2002
by Mark NelsonMore...
This free tool can be used to extract information about an AVI file, including resolution, bit-rate, video codec, etc. Full source available for download.
Created: 12/10/2002
by Mark NelsonMore...
The folks at UltimateZip
bill their freeware program as The Archive Program for the New Millenium, and why not? It has a full set of archive types that it supports, built in disk-spanning, skins, the works. It looks pretty good.
Release 2.7.1 shipped in September, 2002.
Created: 12/10/2002
by Mark NelsonMore...
At the time of its addition to the database, this project appears to be in a very early alpha state. Looks as though volunteers are needed!
Created: 12/10/2002
by Mark NelsonMore...
This instructive program creates a wide variety of 16 and 32 bit CRCs, many of which are commonly used in archiving programs. View the README in the same directory of the ftp server.
Created: 12/10/2002
by Mark NelsonMore...
A Zip compressor for the C64, and by extension, the C128, VIC20, C16, and Plus/4. If you have to ask what a C64 is, don't bother!
Created: 12/10/2002
by Mark NelsonMore...
DMSDOS is a loadable module for the Linux kernel. It provides read and write access to compressed FAT filesystems, such as Microsoft's Doublespace/ Drivespace and Stac's Stacker.
Created: 12/10/2002
by Mark NelsonMore...
A rather terse description on SourceForge: Stream transcoder will be designed for use in relaying and converting streaming audio between various formats. MP3 and Vorbis will be supported. In Beta 4 as of September, 2002.
Created: 29/09/2002
by Mark NelsonMore...
The Zinf audio player is a simple, but powerful audio player for Linux and Win32. It supports MP3, Ogg/Vorbis, WAV and Audio CD playback, SHOUTcast/Icecast HTTP streaming, RTP streaming, a powerful music browser, theme support and a download manager. Zinf is based on the FreeAmp source code. However, AMP® is a trademark of PlayMedia Systems, Inc., and therefore the original name of the project cannot be used any longer. On this website the old project will be referred to as FreeA*p.
Created: 16/09/2002
by Mark NelsonMore...
Squeezer is another executable compressor for Windows, and it's now free. Here's what you'll read on the Vidfern web site:
Vidfern Squeezer as the best file compressor, can squeeze executable files as well as text and HTML files. Get more space by squeezing your files! Squeezer is now free for personal and commercial use. It is fully functional, easy and powerful.
Reader Vali from the jp TLD said Thanks to all who create this real good product. I found it a very nice and easy compressor that supports exe, html and text files freely!
Created: 15/09/2002
by Mark NelsonMore...
IZArc is a free multi-format archiver. Supports the following formats: ACE, ARC, ARJ, BH, BZ2, CAB, ENC, GZ, HA, JAR, LHA, LZH, MBF, MIM, PAK, PK3, RAR, TAR, TBZ, TGZ, UUE, XXE, Z, ZIP, ZOO. Pretty good list, wouldn't you say?
Created: 12/09/2002
by Mark NelsonMore...
ZipStar is a free archiving application for home users. It can create, modify and extract the archive formats SQX, CAB and ZIP. Besides the application itself, ZipStar also provides an extension for the Windows Explorer. With this extension it is possible to extract or create archives directly within Windows Explorer.
ZipStar may be used free of charge if you
are a student, teacher or some other kind of member of a teaching facility (public/private school or university);
use the software exclusively for private and non-profit purposes.
A file archive utility written in VB. Compression and decompression routines are LZSS. Full source code included.
Created: 03/09/2002
by Mark NelsonMore...
WinImp has been re-released as freeware. This archiver can create Zip files, and extract from the usual list of Zip, ARJ, RAR, and so on. It includes a couple of proprietary (BWT-based?) algorithms that purport to do well on text files.
DataCompression.info user Mike notes that It includes 2 very good
compression methods and only the new versions of Winrar, Winace or Rk can compete with the compression ratios of Winimp.
Created: 23/08/2002
by Mark NelsonMore...
This is an open source PDF renderer, which includes code that decompresses LZW data embedded in the PDF file. It doesn't actually do the LZW decompression itself - it converts the data to a format that can be handled by UNIX compress.
Created: 08/08/2002
by Mark NelsonMore...
VcDemo is an interactive image and video compression (freeware) software package for Windows. It is intended as a tool for learning about compression techniques: from basic sampling and PCM to today's most advanced scalable embedded zerotree wavelet image compression technique and the MPEG video compression standard. VcDemo is an ideal tool for students to explore the possibilities of compression theory using textbook algorithms on real images. The package is also very suitable for on-line demonstrations in lectures. A user manual is available, as well as a set of exercises that can serve as home work.
Created: 01/08/2002
by Mark NelsonMore...
YBS is a high-performance archiver based on Burrows-Wheeler Transform and distance coding modelling. It's quite fast even on skew data and achives high compression ratio. Versions are posted here for DOS and Win32. It appears that the last update was in 2000.
Created: 11/07/2002
by Mark NelsonMore...
PifPaf zip/unzip is a small and simple drag-and-drop ZIP compressor for MacOS and MacOS X.. PifPaf Mac/Win is a small and simple drag and drop LZW compressor (DiskDoubler type, file's tree keeping) for MacOS AND Windows (.ssr extension) This is a French language site.
Created: 12/06/2002
by Mark NelsonMore...
This is a free program that the author describes as a clone of WinZip. It is written entirely in Java and supports a nice variety of archive formats, including zip, jar, gzip, and bzip2 Requires Java 1.3, 1.4 is recommended. The 1.0 release shipped in May of 2002.
Created: 23/05/2002
by Mark NelsonMore...
ZipCentral is a free and easy to use zip file manager with all the utilities you need to manage your zip files. The goal of ZipCentral is to be the most robust freeware zip-package you can find today. It is a great tool for the beginner as well as the expert. Working with zip files has never been easier!
Created: 16/05/2002
by Mark NelsonMore...
The MPEG Library is a C library to decode MPEG-1 video streams and dither them in a variety of colour schemes. The ftp site also includes the source for an SGI based MPEG player built with the library, and some additional MPEG programs created elsewhere. This page has some introductory documentation regarding the library, as well as a link to the download site.
Created: 08/05/2002
by Mark NelsonMore...
shcodec is order-0 32-bit canonical static huffman codec. It encodes an alphabet of 256 symbols with minimum-redundancy or length-restricted codes (basic method: Alistair Moffat and Jyrki Katajainen, modified by Artur A. Pessoa). shcodec uses efficient method for tree packing: on text files packed tree size is approx 68 bytes, on binary files this value is about 132 bytes. Memory requirements are very small: 1280 bytes for encoding and only 574 bytes for decoding! shcodec uses extremely fast and simple SHIFT-OR method for encoding, and CANONICAL-DECODE with a cache for small codewords for decoding.
Update: Alexander has added SH-SFX to the web page - a program for creating Win32 SFXs from files compressed with shcodec.
Created: 04/04/2002
by Mark NelsonMore...
This unique free program searchs through all your zip files looking for specific strings in specific file types.
Created: 04/03/2002
by Mark NelsonMore...
A free 16 bit archiving program. No long file name support, so it might not be particularly appealing to the Win32 crowd.
Created: 27/02/2002
by Mark NelsonMore...
GCA is a freeware portable general purpose lossless compression program. English version of this page should be
here.
Created: 27/02/2002
by Mark NelsonMore...
This page offers a program called the IFS Application Framework, a freeware program that does fractal image coding, along with some docs. The author of the page puts it this way: We use insanely complicated mathematics to achieve big compression ratios.
Created: 21/02/2002
by Mark NelsonMore...
Xdelta is a complete system for managing delta-compressed storage and network transport. Using the Xdelta system, you can easily incorporate this functionality into your application.
Created: 10/01/2002
by Mark NelsonMore...
A GPL product, with the following description from the site:
mpeg2dec is an mpeg-1 and mpeg-2 video decoder. It is purposely kept simple : it does not include features like reading files from a DVD, output picture scaling, audio decoding, synchronisation, etc... The main purpose of mpeg2dec is to have a simple test bed for libmpeg2. mpeg2dec also includes a demultiplexer for mpeg-1 and mpeg-2 program streams, and output routines for a variety of different interfaces.
Created: 01/01/2002
by Mark NelsonMore...
The Open Mash Consortium supports the Mash streaming media toolkit and distributed collaboration applications based on the Internet Mbone tools and protocols. The consortium is funded by a grant from the National Science Foundation Internet Technologies Program (Grant ANI-9907994) and by contributions from consortium members.
Created: 13/12/2001
by Mark NelsonMore...
This product creates Zip files with long filenames under MS-DOS. It supports FAT32 and NTFS, and is designed to give you an easy way to back up your data when your Win32 machines decides not to boot. It's Free!
Created: 08/12/2001
by Mark NelsonMore...
The University of Central Florida has this web page which allows you to upload a file and then compress it using a wide variety of algorithms.
Created: 29/11/2001
by Mark NelsonMore...
This paper from Jurgen Abel and Bill Teahan presents several preprocessing algorithms for textual data, which work with BWT, PPM and LZ based compression schemes. The algorithms need no external dictionary and are language independent. The average compression gain is in the range of 3 to 5 percent for the text files of the Calgary Corpus and between 2 to 9 percent for the text files of the large Canterbury Corpus.
Created: 14/11/2001
by Mark NelsonMore...
This program does as much optimization of your web pages as possible, all in an effort to reduce its size and hence the time it takes users to D/L the page. Free!
Created: 14/11/2001
by Mark NelsonMore...
This project is supposedly out to create a free Linux MPEG player. The page is in French, I believe, and as a result my interpretation is suspect.
Created: 21/10/2001
by Mark NelsonMore...
Rodrigo Castro has an interesting project going at the University of Sao Paulo in Brasil. Rodrigo is integrating compression with the virtual memory system of Linux. By storing compressed pages in RAM, he hopes to improve overall system performance. The goal is to read and write fewer pages to disk. See the full details on
his project page
at SourceForge.
Created: 03/10/2001
by Mark NelsonMore...
Aladdin Systems, makers of the popular Stuffit program, have a free program called Expander that can be used to extract files from many popular archive formats, including Zip, Sit, and more.
Created: 30/09/2001
by Mark NelsonMore...
Glicbawls is a lossless and/or near-lossless image compression algorithm that apparently does really well on gray-scale images but perhaps not as well on color. This link points to an archived page, as the original has disappeared from the net. As a result, links on the page may or may not work propery
Created: 19/09/2001
by Mark NelsonMore...
From the site: Pngcrush is an optimizer for PNG (Portable Network Graphics) files. It can be run from a commandline in an MSDOS window, or from a UNIX or LINUX commandline. .
Created: 30/08/2001
by Mark NelsonMore...
Mpegplus is an open source lossy encoder that the author apparently has created in response to dissatisfaction with existing MP3 encoders. MP+ has plugins for WinAmp and other players.
Created: 30/08/2001
by Mark NelsonMore...
Jeff Gilchrist maintains the well known Archive Comparison Test site, which pits all the compressors of the world against one another. This page on that site has links to the all those archivers. Lots of links.
Created: 25/08/2001
by Mark NelsonMore...
Jeff Gilchrist maintains the well known Archive Comparison Test site, which pits all the compressors of the world against one another. This page on that site has links to the all those archivers. Lots of links.
Created: 25/08/2001
by Mark NelsonMore...
A port of Julan Seward's bzip2 program to the Mac. It's free and full source is included if you are the adventurous type.
Created: 25/07/2001
by Mark NelsonMore...
Easy-GZ is a compression tool which allows extremely tight compression and quick decompression. Based on the GZip standard and optimized for the Macintosh platform, an easy-to-use, effective GZ compressor has finally been brought to the Mac OS. Is this software free or not? I'm putting it in the free category - if you find out otherwise please send me an email.
Created: 25/07/2001
by Mark NelsonMore...
OpenUp allows you to double-click on compressed and archived files and have them open in the Workspace without having to resort to the command-line tools gnutar and gunzip. It also supports opening many other common, and uncommon formats. Appears to be free, with source available.
Created: 25/07/2001
by Mark NelsonMore...
Archive expander for the Mac and Windows. Whether you're using Mac or a PC, MindExpander will expand ZIP, SIT, SEA, HQX, and other popular compression formats. Free software.
Created: 25/07/2001
by Mark NelsonMore...
Free zip program - zip and unzip utility for windows by Ken Ward. This free program can be downloaded and freely used and distributed.
Created: 25/07/2001
by Mark NelsonMore...
With ZipALot you can extract (unace, unrar and unzip) multiple files at once! ZipALot takes all the archives from one directory and extracts them to another one. ZipALot can currently handle ZIP, RAR and ACE (V.2) archives.
Created: 25/07/2001
by Mark NelsonMore...
PackWord can compress a Microsoft Word document (.doc) file into a smaller, compressed, .doc file. The compressed .doc file is self-extracting: when loaded into Microsoft Word, the compressed document will automatically expand to the original version.
Created: 28/05/2001
by Mark NelsonMore...
The term bijective as used by Scott means that for any given given file X you are guarantted that A( B( X ) ) == B( A( X ) ) == X, where A and B are a pair of bijectively matched programs. In this particular case, A and B are a compressor and decompressor that use arithmetic coding. Includes C++ source.
Created: 01/05/2001
by Mark NelsonMore...
This web page shows a set of images that the author uses to demonstrate the performance of the Eri compressor. The claim is that Eri32 does better on these 24 bit color images than any other lossless compressor.
Created: 08/04/2001
by Mark NelsonMore...
This page is devoted to a new compressor called M99. The author says that M99 is a new type of statistical compressor that has speeds rivaling the fastest Huffman coders with ratios of the best statistical modeling programs. Good!
Created: 02/01/2001
by Mark NelsonMore...
A lossless video codec for Win32. It's designed to be super-fast, allowing it to be used to capture video. Free software, full source available.
Created: 15/11/2000
by Mark NelsonMore...
A free program to create self extracting archives from Zip files. An open source program that harkens back to shareware days by asking for donations, old-school style.
Created: 15/09/2000
by Mark NelsonMore...
An Internet-based video conferencing system. Why is it interesting to us? It apparently includes an H.261 codec.
Created: 17/08/2000
by Mark NelsonMore...
This page has a good set of pointers to LHA programs and source code, including variants such as AR002, lz_comp2, and Lharc.
Created: 03/06/2000
by Mark NelsonMore...
Zlibc emulates a compressed file system. This lets you keep all your executables compressed in one place, unzipping them on the fly as they are needed. Looks like it works with various Linux and UNIX type sytems, including Solaris. I'm guessing that it's free, please correct me if I'm wrong.
Created: 03/06/2000
by Mark NelsonMore...
David Fetter wrote a Linux howto telling you how to compile, install, and use bzip2, the BWT-based freeware archiver.
Created: 16/05/2000
by Mark NelsonMore...
EnZip is a freeware Windows compression program. Release 3.0 seems to have shipped in June of 2000, no activity since then.
Created: 09/05/2000
by Mark NelsonMore...
A program that mungs HTML files in order to make them smaller. Some safe optimizations, some unsafe. Not really compression so much as optimization. Note: I've classified this as non-commercial, because the web site makes no mention of any kind regarding payment. I might be wrong.
Created: 09/05/2000
by Mark NelsonMore...
This freeware program is used to convert archives from one format to another. It says it supports "any archiver," I guess you can't ask for more than that.
Created: 23/03/2000
by Mark NelsonMore...
fastJar is a C version of Sun's jar utility. Being written in C instead of Java gives this program a bit of a boost; albeit at the expense of purity.
Created: 02/03/2000
by Mark NelsonMore...
NuLib is a program for the Apple II which manipulates NuFx archives. The page is also the distribution site for NuLib2, and improved version of the program, and NufxLib, a programming library.
Created: 11/02/2000
by Mark NelsonMore...
A console mode program that compresses CHW files. This is the type of file used in some help files distributed for Windows applications.
Created: 09/02/2000
by Mark NelsonMore...
This is a freeware image compressor that does wavelet based compression. Lurawave appears to have all their products and documentation available in German language as well as English. In order to establish their products they are making much of it available as freeware.
Created: 07/02/2000
by Mark NelsonMore...
A freeware archiver that claims high compression ratios. The hypermart web site includes two additional experimental versions of this archiver called BIX and 777.
Created: 11/01/2000
by Mark NelsonMore...
Colin Mummery has created this product which has zip/unzip capability, plus the ability to create self-extracting JAR files. It's free.
Created: 10/01/2000
by Mark NelsonMore...
This is a freeware program that unzips all the zip files it finds in a given Win32 directory. Thank Tabdown Enterprises for the good work.
Created: 01/01/2000
by Mark NelsonMore...
A really nice set of programs and source code for all sorts of data compression. This area doesn't appear to be actively maintained, so there are plenty of out-of-date files, but good stuff mixed in as well.
Created: 16/12/1999
by Mark NelsonMore...
The docs say it all: der ultimative FREEWARE-Packer. Yes, the internal documentation for this archiver is in German, but users limited to English should still be able to figure this program out.
Created: 28/11/1999
by Mark NelsonMore...
This appears to be a freeware archiver. I'm unable to give more information; all the documentation is in an unkown language. Any reader who is able to translate is invited to improve on this description.
Created: 28/11/1999
by Mark NelsonMore...
This is an archiver that appears to have been designed with the DC Micro Development Crusher! Library. No documentation in the package, I'm assuming this is freeware.
Created: 28/11/1999
by Mark NelsonMore...
A freeware archiver from Sweden. Versions available for DOS, Windows, and Linux, with Win9x long filename support. Includes source for extraction from ASD archives.
DCL user feedback: Finally i found what I was looking for, a freeware archiver for both Windows, Dos, and Linux! Another user said: Offers What I waslooking for, very helpful.
Created: 28/11/1999
by Mark NelsonMore...
This site has links to Telvox's CODEC package, which appears to ship in both free and commercial versions. CODEC uses proprietary lossless compression, and is ported to a wide variety of platforms. Telvox is located in Bologna, Italy, and has duplicate web pages in English and Italian.
Created: 26/11/1999
by Mark NelsonMore...
mtv is an MPEG TV Player that runs under Linux and UNIX. Besides watching MPEG files from the Interneti, mtv also lets you play Video DVDs. Freeware and commercial versions are available.
Created: 21/11/1999
by Mark NelsonMore...
Links to lots of info regarding the audio compression portions of the MPEG standards. This includes an overview, the MPEG Audio FAQ, pointers to resources, some free software, and test bitstreams.
Created: 19/11/1999
by Mark NelsonMore...
Zoox is an enhanced version of zoo 2.01 from Andre van Dalen. It will allow you to archive a set of files into a series of zoo archives, each limited to a size that you specify. Thus a large number of files on a hard disk can be stored in compressed form on a series of floppy disks.
Created: 14/11/1999
by Mark NelsonMore...
The Berkeley MPEG player for X11 (look for mpeg_play-2.4 or later; source and binary distributions are available)
Created: 14/11/1999
by Mark NelsonMore...
A mirror site for the big compression software site. See 0index.txt for a list of what's here, an unbelievably large treasure trove.
Created: 13/11/1999
by Mark NelsonMore...
Public domain code by Daniel Bernstein. (Note that this ftp site has an excellent selection of compressoin programs and code.)
Created: 13/11/1999
by Mark NelsonMore...
Create and expand solid archives with the well-known ARJ, able to handle fool archives as it was an ARJ archive (GUS), support of Win95's long file names, ANSI archive comment allowed, with a fast display, ANSI.SYS *not* necessary, protection against ANSI-BOMB, optimized for a minimal use of the RAM (memory), compatibility with ARJ;
- security improved for encrypted arjives, often beter than C**** (a similar product);
Created: 07/11/1999
by Mark NelsonMore...
Zoo is used to create and maintain collections of files in compressed form. It uses a Lempel-Ziv compression algorithm that gives space savings in the range of 20% to 80% depending on the type of file data. Zoo can store and selectively extract multiple generations of the same file. Data can be recovered from damaged archives by skipping the damaged portion and locating undamaged data with the help of fiz(1).
Created: 07/11/1999
by Mark NelsonMore...
TMW is a program for losslessly compressing greyscale images that gives world class compression ratios, at the cost of being tremendously CPU intensive. The current version is TMW_0.51, and is still completely experimental.
Created: 07/11/1999
by Mark NelsonMore...
Home of LHMelt, UNLHA32.DLL, UNARJ32.DLL. All text on this page is in Japanese, except for a single link pointing to English information on UNLHA32.DLL.
Created: 05/11/1999
by Mark NelsonMore...
Tiny HAP is based on Harald Feldman's HAP & PAH 3.0, and is distributed freely. The source code is not identical and should run 25% faster.
Created: 04/11/1999
by Mark NelsonMore...
Includes WaveVideo, PPMZ, LZP, and WaveCode. Charles has source for most of this stuff available elsewhere on his page.
Created: 04/11/1999
by Mark NelsonMore...
Shorten is an audio compression program by SoftSound. Shorten is advertised as a low complexity audio coder that can compress in lossless or lossy mode. This is the home page with links to the download page. Includes source and binaries for DOS, Windows, and Linux. Evaluation version is available.
Created: 21/09/1999
by Mark NelsonMore...
SCRNCH is a data compressor designed for people, such as software developers, who need to send programs or files to a large number of people cheaply. It provides a high degree of compression and the ability to customize the self-extracting compressed file. SCRNCH takes its time to produce optimal compression, but decompression is automatic and very fast.
Created: 18/02/1999
by Mark NelsonMore...
UnZip is an extraction utility for archives compressed in .zip format (also
called "zipfiles"). Although highly compatible both with PKWARE's PKZIP
and PKUNZIP utilities for MS-DOS and with Info-ZIP's own Zip program, our
primary objectives have been portability and non-MSDOS functionality.
Created: 18/02/1999
by Mark NelsonMore...
The AFsp package contains audio file utility programs and a library of routines for reading and writing audio files. This ftp site contains three different releases of the software. Includes programs to compare, copy, filter, an analyze audio files. Also has resampling, LPC, and noise generation programs. Executables for Windows and Sun, with a wide variety of file formats supported.
Created: 25/01/1999
by Mark NelsonMore...
This FTP site has copies of a wide variety of archiving programs. Includes current programs such as PKZip, ARJ, and RAR, as well as historically relevant programs such as PAK and ARC. Look at 00index.txt for a directory of what's on hand.
Created: 25/01/1999
by Mark NelsonMore...
Windows 95 programs Zip and Unzip that use zlib for the compression engine. These two programs don't support encryption, multivolume archives, or old PKZip 1.x formats. Don't confuse thes with the Info-ZIP products, this is something else entirely.
Created: 21/12/1998
by Mark NelsonMore...
This distribution contains MS-DOS executable copies of version 6b of the Independent JPEG Group's free JPEG software. Several different programs for conversion and manipulation of JPEG files.
Created: 20/12/1998
by Mark NelsonMore...
Pbmplus is a toolkit for converting various image formats to and from portable formats, and therefore to and from each other. The idea is, if you want to convert among N image formats, you only need 2*N conversion filters, instead of the N^2 you would need if you wrote each one separately.
This software isn't necessarily related to image compression, but it is often quite useful when working with images.
Created: 20/12/1998
by Mark NelsonMore...
Free, portable C code for JPEG compression is available from the Independent
JPEG Group. Source code, documentation, and test files are included.
Created: 01/01/1970
by Mark NelsonMore...
An early Japanese archiver, complete with C source. This source code by Haruhiko Okumura was influential in that many subsequent archiving programs were based on the concepts it explained. No documentation to speak of.
Created: 01/01/1970
by Mark NelsonMore...
DWC is an archive utility patterned after ARC, (C) Copyright System Enhancement Assoc., that has many improvements and added features. Please note, however, that DWC is Not file compatible with ARC and cannot be used to add or extract ARC files. Basic improvements include compression speed and size, and error handling. Also, DWC includes all of ARC's commands and options (except the run command) and adds many new ones along with small improvements over the old ones.
Created: 01/01/1970
by Mark NelsonMore...
HA is a small file archiver utility. It's main goal is to offer maximum compression without fancy addons. This version of HA is not yet a finished product. It is still quite slow and implementation of commands is somewhat incomplete and inconsistent. I hope that someone finds it usefull even in it's current form.
Created: 01/01/1970
by Mark NelsonMore...
HAP is a datacompression program that generally outperforms many other datacompression programs. It is very small and easy to use. The latest release, available to registered HAP 3.00 users only, gives much improved compression speed; typically two to five times as fast as 3.00.
Created: 01/01/1970
by Mark NelsonMore...
Quantum is a state-of-the-art data compressor which is designed to optimize for space over time. Three programs are included: PAQ, UNPAQ and QWIN. Each of these require at least a 386 CPU to run. PAQ and UNPAQ are 32-bit DOS programs and require the Borland DPMI DOS extender. QWIN is a Windows program.
Created: 01/01/1970
by Mark NelsonMore...
Splint is a Huffman-coding-basis data compression/decompression program, based on Jones' idea of using splay-prefix scheme. For further details, refer to:
Jones, Douglas. W,:
Application of Splay Trees to Data Compression,
Communications ACM, Vol. 31, No. 8, pp. 996 - 1007. (August 1988). Includes source code.
This program uses 64-state Markov model to improve compression rate. Usually this program works as better as pkarc Crunching. Sometimes, it gives a little bit better result than UNIX compress uses 16bit LZW.
Created: 01/01/1970
by Mark NelsonMore...
SQPC is derived from the SQ File Squeezer written by Richard Greenlaw. SQPC was written using assembly language to achieve a smaller program file and to improve performance. It uses the same Huffman encoding algorithm for creating a squeezed file from any input file. Additionally, SQPC allows the use of path names and wildcards, and it incorporates the file date/time stamp feature employed in the newer version of SQ known as NSQ.
Created: 01/01/1970
by Mark NelsonMore...
Zip 2.2 is a compression and file packaging utility. It is compatible with
PKZIP 2.04g (Phil Katz ZIP) for MSDOS systems. There is a companion to zip
called unzip (of course) which you should be able to find the same place
you got zip. See the file 'WHERE' for details on ftp sites and mail
servers.
Created: 01/01/1970
by Mark NelsonMore...
7-ZIP Archiver is a freeware program for manipulating with ZIP file archives. 7-ZIP is a console 32-bit executable for Windows 95, 98 and NT. Main features: ZIP format compatibility
Compression ratio 2-8 % better than WinZIP/ PKZip
FAR Support
Created: 01/01/1970
by Mark NelsonMore...
gzip (GNU zip) is a compression utility designed to be a replacement for compress. Its main advantages over compress are much better compression and freedom from patented algorithms. It has been adopted by the GNU project and is now relatively popular on the Internet. gzip was written by Jean-loup Gailly (jloup@gzip.org), and Mark Adler for the decompression code.
By virtue of links, this seems to be the official home page.
Created: 01/01/1970
by Mark NelsonMore...
