MacZip is a cross-platform compatible tool that includes both Zip (for compression) and UnZip (for extraction). Zip is a compression and file packaging utility for Unix, VMS, MSDOS, OS/2, Windows 9x, Windows NT, Atari, Macintosh, Amiga, Acorn RISC OS, and other systems. UnZip unpacks zip archives. The Zip and UnZip programs can process archives produced by PKZIP, and PKZIP and PKUNZIP can work with archives produced by zip. Zip version 2.2 is compatible with PKZIP 2.04
Our Review: MacZip allows you to create and extract zip archives on the Mac. MacZip supports drag-and-drop for both compression/expansion, and Apple-Script (which could be useful to have Mac-Zip automatically compress files for archiving). The interface is a little patchy but the drag-and-drop support means you shouldn't need to manipulate settings within the program anyway.