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# 7-Zip 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 MB
Download | .msi | 64-bit x64 | 1 MB
Download 7-Zip 15.05 beta (2015-06-14) for Windows:
Link | Type | Windows | Size
--- | --- | --- | ---
Download | .exe | 32-bit x86 | 1 MB
Download | .exe | 64-bit x64 | 1 MB
## 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. ## 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 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 87 languages 7-Zip works in Windows 10 / 8 / 7 / Vista / XP / 2013 / 2008 / 2003 / 2000 / NT. There is a port of the command line version to Linux/Unix. On 7-Zip's SourceForge Page you can find a forum, bug reports, and feature request systems. ## Compression ratio We compared 7-Zip with WinRAR 5.20. FILE SETS: Mozilla Firefox 34.0.5 for Windows and Google Earth 6.2.2.6613 for Windows.
Archiver | Mozilla Firefox | Google Earth
--- | --- | ---
65 files 85 280 391 bytes | 483 files 110 700 519 bytes
Compressed size | Ratio | Compressed size | Ratio
7-Zip 9.35 -mx | 39 357 375 | 100% | 15 964 369 | 100%
WinRAR 5.20 -m5 -s -ma5 -md128m | 41 789 543 | 106% | 17 035 432 | 107%
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. |
7-Zip 15.05 beta | 2015-06-14
7-Zip 15.05 beta
7-Zip 15.00 alpha | 2015-04-01
7-Zip 15.00 alpha
7-Zip 9.38 beta | 2015-01-03
7-Zip 9.38 beta
7-Zip ChangeLog
History of 7-zip changes
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