.zip

.zip is the file extension for a file created by PKZip -- a compression and file packaging/archive utility generally for a DOS/Windows computer. A .zip file may contain files, directory information and other data. Zip is the preferred method of compression for Internet file transmissions.

URLs:

PKWARE's PKZIP

PKWARE's product listings

Info-ZIP's free ZIP 2.0.1

A free version of a file compression.archive utility

WinZip Home Page

The Utility-of-utilities for the Windows user, zip and unzip with an easy to use graphical interface.

W3E References:

.gz

a UNIX-based compression utility file extension

.Z

an older UNIX-based compression utility file extension

file compression