7-Zip 4.45 Beta

7-Zip is a file archiver with the high compression ratio. The program supports 7z, ZIP, CAB, RAR, ARJ, LZH, CHM, GZIP, BZIP2, Z, TAR, CPIO, RPM and DEB formats. Compression ratio in the new 7z format is 30-50% better than ratio in ZIP format.

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, Z, CPIO, RPM, DEB and NSIS
* 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 63 languages

Changes:

* Now it's possible to specify the size of solid block and the number of CPU threads in "Add to archive" dialog box.
* Default dictionary size was increased: Normal: 16 MB, Max: 32 MB.
* Speed optimizations.
* Benchmark was improved (new "b" command in command line version).
* The number of DLL files was reduced.
* Now it's possible to associate 7-zip with combined types like .tbz2
* switch -mhcf=off is not supported now.
* If -t{Type} switch is not specified, 7-Zip now uses extension of archive to detect the type of archive.
* Some bugs were fixed.
* New localization: Welsh.

Download: 7-Zip 4.45 Beta freeware
Link: Home Page

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