A set of benchmarks designed to show the state of the art in lossless data compression, by Jeff Gilchrist.

Does automatic archiving and backup of recently modified.

Lossless compression for photoquality images. Cross-platform. SDK. Free reader.

Free zip file utility, which allows you to quickly, open, create, and modify ZIP archives. In addition, CAM Unzip supports password protection, and can run an archive's Setup file automatically after it is unzipped.

Free Zip/Unzip utility. CoffeeCup Free Zip Wizard has built-in E-mail and FTP functions, so you can Zip and send your files in one easy step.

Free application to handle a variety of archive file formats, including .ace, .arc. arj, .cab, .gz, .lha, .jar, .rar, .tar and of course .zip. (Win 9x/NT/2000/Me)

Tool that can help you make static HTML websites run 50% faster and save 50-80% of the bandwidth.

Designs, develops, and markets compression processors, encryption/compression processors, and software which provide alternatives for the implementation of high performance networks and tape storage devices. (Nasdaq: HIFN).

Free, portable compression and extraction utilities for archives compressed in .zip format. Discussion forum, source code, and binaries for several platforms.

Software house in Germany, with compression products for mainframe, midrange and mini systems.

Aims to show the maximum achievable lossless data compression ratio for several filetypes (text, executable, bmp). The best 150+ programs for every filetype are shown in a table indicating compression ratio and switches/options used to achieve that compression.

Free LZW file compressor mainly used for compressing and extracting tar.Z archives, released as source code. For UNIX systems.

A command line port of the 7zip utility to Unix, Mac OS X and BeOS.

Quantization, Compression, and Coding Library. C source code freely available.

Specializing in data compression software technologies for wireless transmission, Internet acceleration, Microsoft Exchange and Lotus Notes E-mail acceleration, and PDA video conferencing, using cellular automata transforms.