7-Zip 9.05 Beta 
7-Zip is a file archiver with a high compression ratio.
Compression ratio in the new 7z format is 30-50% better than ratio in ZIP format.
7-Zip works in Windows 98/ME/NT/2000/XP. Command line version of 7-Zip can be used in Linux via Wine program.7-Zip is the free file archiver with the highest compression ratio.
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 other zip compatible programs.
Here are some key features of “7-Zip:
· 7-Zip is free software distributed under the GNU LGPL
· Highest compression ratio in new 7z format format
· Supported formats: 7z, ZIP, CAB, RAR, ARJ, GZIP, BZIP2, TAR, CPIO, RPM and DEB
· For ZIP and GZIP formats 7-Zip provides compression ratio that is 2-10 % better than ratio provided by PKZip and WinZip
· Self-extracting capability for 7z format
· Integration with Windows Shell
· Powerful File Manager
· Powerful command line version
· Plugin for FAR Manager
· Localizations for 40 languages
7-Zip now can update solid .7z archives.
· Some bugs were fixed.
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