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.
ColdCompress - - A simple and graphical .tar.gz compression program for Mac OS X Server.
Compact Pro - - A shareware file compression utility that provides segmented archive and encryption features.
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.
MacGzip - - A freeware compression utility based on open source code.
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.
MacZip - - Describes status of development and porting efforts.
Mindvision - - Creator of Mac file compression, installation, and decompression programs.
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.
PackUpAndGo - - A drag-and-drop compression program by Stone Design for Mac OS X Server or Yellow Box for Windows.
ZipIt - - Full-featured Macintosh shareware utility to compress files in the zip format.