Easy to use shareware tool for unzipping and installing your downloaded Internet files.

Open source Windows utility for manipulating archives. Formats 7z, ZIP, GZIP, BZIP2 and TAR are supported fully, other formats can be unpacked.

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.

ZIP and UNZIP Management complete with built-in Wizards to walk you through creating ZIP and EXE (self extracting) archives.

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).

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.

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.

A support site for RAR and WinRAR archivers.

Companion tool for WinRAR for preserving NTFS alternate streams.

Offers downloads, support forums and registration for RAR compression tools.

A ZIP File Manager that runs on a Web server and has a browser based interface.

High performance lossless image compression applications, utilities and libraries.

German reseller of WinRAR, with information in English and German. Prices in Euros.

A compressor for video, animation and sound data includes video compression with twice the video quality and now uses the Bink audio codec for perceptually lossless 8 to 1 compression.

E-Space, compression software for online archiving and disk space management.

Creates compressed TomeRaider files, allows unsurpassed text compression (45%-60%), plus TR files are portable between platforms of Windows, PDA (palm, pocket PC or psion)

This URL takes you to a compression FAQ that explains compression to technical people as well as describing the various programs, and what they do to users.