7-Zip 4.62

7-Zip is a file archiver much like winzip, only with a better compression ratio.
Further more 7-Zip is open source software. Most of the source code is under the GNU LGPL license, meaning that it’s 100% free to use.

Main features:

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 69 languages