7-Zip 9.22 Beta (64-bit) Date added: April, 19th 2011 - (Open Source)

7-Zip is a file archiver that was developed for computers running Microsoft Windows. It uses the 7z file format, which ensures higher level of compression (up to 50% higher than the standard zip format), but can easily work with other formats as well.

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) and 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 80 languages

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.

Tags: 7-zip 64 bit for windows 7 64 bit, file archiver, high compression, compression utility, zip file software, file manager, self-extracting, archiver, compress, zip