Zip is a compression and file packaging utility
for Unix, VMS, DOS, OS/2, Windows 9x/NT, Amiga,
Atari, Macintosh, BeOS, SMS/QDOS, MVS, VM/CMS, and others. It is analogous to a combination of the
Unix commands tar(1) and compress(1) and is
compatible with PKWARE's PKZIP and Nico Mak's WinZip. It's part of the Info-ZIP project.