7-Zip 9.10 Beta 3 Update/ 7-Zip 4.65 Portable | 1.27MB
7-Zip is an open source file archiver with the high compression ratio 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. 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 74 languages

Changes in 7-Zip 4.65 (February 3, 2009) for Windows:
- 7-Zip File Manager now can calculate SHA-256 checksum.
- Some bugs were fixed.

Changes in 7-Zip 9.10 ( 2009-12-22):
* The BUG in 7-Zip 9.09 beta was fixed: 7-Zip created incorrect ZIP archives, if ZipCrypto encryption was used.
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