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.
Easy-GZ: A compression tool which allows extremely tight compression and quick decompression. Based on the GZip standard and optimized for the Macintosh platform.
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.
MacRAR: A compression program by Guillaume Dufay that works with RAR-compressed archives, a compression method from the PC world. Provides drag-and-drop and MacBinary III encoding support.
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.
PKZIP Mac: A zip compression utility for the Macintosh.
Yet Another Decoder: A utility designed for decoding messages downloaded from Usenet newsgroups. It can decode MacBinary, BinHex, MIME Base64, and uuencode files.
ZipIt: Full-featured Macintosh shareware utility to compress files in the zip format.