7-zip 9.20 / 9.22 beta / 9.34 alpha

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Date: 18 November 2010, 18 April 2011 (beta), 22 June 2014 (alpha)
Size (9.20): 1.06 MB (32-bit), 1.31 MB (x64)
Size (9.22 beta): 1.08 MB (32-bit), 1.38 MB (x64)
Size (9.34 alpha): 1.12 MB (32-bit), 1.44 MB (x64)
Price: freeware
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Editor's Rating: 4.5/5 Rating 4.5 out of 5

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Publisher's Review:

High compression ratio in new 7z format with LZMA compression
7-Zip is free software distributed under the GNU LGPL
Supported formats: 7z, ZIP, CAB, RAR, ARJ, LZH, GZIP, BZIP2, Z, TAR, CPIO, RPM and DEB
For ZIP and GZIP formats 7Zip 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

Changelog:
(7-zip version 9.34 alpha)
The BUG in 9.33 was fixed:
- Command line version of 7-Zip could work incorrectly, if there is relative path in exclude filename optiton (-x) and absolute path as include filename.
The BUG in 9.26-9.33 was fixed:
- 7-Zip could not open some unusual 7z archives that were created by another software (not by 7-Zip).
The BUG in 9.31-9.33 was fixed:
- 7-Zip could crash with switch -tcab

(7-zip version 9.20)

- 7-Zip File Manager now can calculate SHA-256 checksum.
- Some bugs were fixed.