Allume Systems
- Makers of the Stuffit suite of compression utilities. Such programs include Stuffit Expander, a freeware expander, and Stuffit Deluxe, the company's ultimate utility for compression and seamless Finder integration.
- http://www.allume.com/

Mindvision
- Creator of Mac file compression, installation, and decompression programs.
- http://www.mindvision.com/

MacZip
- Describes status of development and porting efforts.
- http://www.haase-online.de/dirk/maczip/

MacBzip2
- a freely available, patent free, high-quality data compressor. It typically compresses files to within 10% to 15% of the best available techniques, whilst being around twice as fast at compression and six times faster at decompression.
- http://persephone.cps.unizar.es/~spd/bzip2/

OpenUp
- A powerful compression program by Scott Anguish for Mac OS X Server and OpenStep that can expand a large variety of common and uncommon compression formats.
- http://www.stepwise.com/Software/OpenUp/index.html

ColdCompress
- A simple and graphical .tar.gz compression program for Mac OS X Server.
- http://www.stepwise.com/Software/ColdCompress/index.html

PackUpAndGo
- A drag-and-drop compression program by Stone Design for Mac OS X Server or Yellow Box for Windows.
- http://www.stone.com/PackUpAndGo/PackUpAndGo.html

MacTar
- A Mac OS port of "tar" (tape archive), a common file-packing format used on Unix machines. This program reads and writes tar format archives.
- http://www.strout.net/macsoft/mactar/

Compact Pro
- A shareware file compression utility that provides segmented archive and encryption features.
- http://www.cyclos.com/compactpro.htm

MacGzip
- A freeware compression utility based on open source code.
- http://persephone.cps.unizar.es/~spd/gzip/

ZipIt
- Full-featured Macintosh shareware utility to compress files in the zip format.
- http://www.maczipit.com/