7-Zip (also written as seven zip) is a file archiver predominantly for the Microsoft Windows operating system. It operates either as a command line program or with a graphical user interface. It also features integration with the Windows shell environment. 7-Zip is free software, developed by Igor Pavlov and distributed under the GNU LGPL license. In the form of p7-Zip , 7-Zip has been ported for use on Unix-like systems such as Linux and FreeBSD. It is a competitor to the market-leading WinZip and WinRAR programs, both of which are closed source.

7Zip features

• High compression ratio in 7-zip format
• Supports all common formats such as ZIP, RAR, ISO, GZIP, TAR, BZIP2, etc.
• Command line version
• Localization for 63 languages
• Works with Windows 98, ME, NT, 2000, XP
• Freeware, use it at no cost.