Welcome to the 7-Zip Home!

7-Zip is a file archiver with a high compression ratio.

Download 7-Zip 4.57 (2007-12-06) for Windows:

Link Type Windows Size

Download .exe 32-bit 840 KB

Download .msi x64 1103 KB

Download 7-Zip 4.58 beta (2008-05-05) for Windows:

Link Type Windows Size

Download .exe 32-bit 857 KB

Download .msi x64 1117 KB

The download links above redirect you to download pages on SourceForge.net

License

7-Zip is open source software. Most of the source code is under the GNU LGPL license. The unRAR code is under a mixed license: GNU LGPL + unRAR restrictions. Check license information here: 7-Zip license.

You can use 7-Zip on any computer, including a computer in a commercial organization. You don't need to register or pay for 7-Zip. But you can make a donation to support further development of 7-Zip.

The main features of 7-Zip

High compression ratio in new 7z format with LZMA compression Supported formats:

Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR Unpacking only: RAR, CAB, ISO, ARJ, LZH, CHM, MSI, WIM, Z, CPIO, RPM, DEB and NSIS

For ZIP and GZIP formats, 7-Zip provides a compression ratio that is 2-10 % better than the ratio provided by PKZip and WinZip Strong AES-256 encryption in 7z and ZIP formats Self-extracting capability for 7z format Integration with Windows Shell Powerful File Manager Powerful command line version Plugin for FAR Manager Localizations for 69 languages

7-Zip works in Windows 98/ME/NT/2000/XP/Vista. There is a port of the command line version to Linux/Unix.

On 7-Zip's Source Forge Page you can find a forum, bug reports, and feature request systems.

Compression ratio

We compared 7-Zip with some of the leading archivers.

FILE SETS: Mozilla Firefox 1.0.7 for Windows and Google Earth 3.0.0616 for Windows after full installation.

Archiver Mozilla Firefox Google Earth

161 files
15,684,168 bytes 115 files
23,530,652 bytes

Compressed size Ratio Compressed size Ratio

7-Zip 4.23 (7z format) 4621135 100% 6109183 100%

WinRAR 3.50 5021556 109% 6824892 112%

CABARC 5.1 5131393 111% 7434325 122%

WinZip 10.0 beta (maximum-PPMd) 5277118 114% 8200708 134%

7-Zip 4.23 (zip format) 6222627 135% 8909446 146%

WinZip 10.0 beta (maximum-portable) 6448666 140% 9153898 150%

Compression ratio results are very dependent upon the data used for the tests. Usually, 7-Zip compresses to 7z format 30-70% better than to zip format. And 7-Zip compresses to zip format 2-10% better than most of other zip compatible programs.

Recommended Tool:

PPTminimizer - Compress Word and PowerPoint Files by up to 98%. Free Trial available at: www.PPTminimizer.com

Subscribe to 7-Zip News

To subscribe to notifications about new versions of 7-Zip, send a blank email to:
7-Zip-subscribe@topica.com

7-Zip is a winner in the SourceForge.net Community Choice Awards 2007 in two categories:

Best Project Best Technical Design

7-Zip 4.58 beta 2008-05-05

Speed optimizations Unicode support for .ZIP acrhives
Read about all changes

You are viewing a mobilized version of this site...
View original page here