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7-Zip is an open source software.

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: ARJ, CAB, CHM, CPIO, DEB, DMG, HFS, ISO, LZH, LZMA, MSI, NSIS, RAR, RPM, UDF, 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 74 languages.
None available for this version
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