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Welcome to the 7-Zip Home!
7-Zip is a file archiver with a high compression ratio.

Download 7-Zip 9.20 (2010-11-18) for Windows:

Link Type Windows Size
Download .exe 32-bit x86 1 MBDownload .msi 64-bit x64 1 MB

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 commercialorganization. You don't need to register or pay for 7-Zip.

The main features of 7-Zip
High compression ratio in 7z format with LZMA and LZMA2 compression
Supported formats:
Packing / unpacking: 7z,XZ, BZIP2, GZIP, TAR, ZIP and WIM
Unpacking only: ARJ, CAB, CHM, CPIO, CramFS, DEB, DMG, FAT, HFS, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, RAR, RPM, SquashFS, UDF, VHD, WIM, XAR and Z.
For ZIP andGZIP 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 7zformat
Integration with Windows Shell
Powerful File Manager
Powerful command line version
Plugin for FAR Manager
Localizations for 79 languages

7-Zip works in Windows 7 / Vista / XP /2008 / 2003 / 2000 / NT / ME / 98. 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 MozillaFirefox 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...
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