7-Zip is an open source file archiver with high compression ratio.For ZIP and GZIP formats 7-Zip provides compression ratio that is 2-10 % better than ratio provided by PKZip and WinZip.The program supports Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR, Unpacking only: RAR, CAB, ISO, ARJ, LZH, CHM, Z, CPIO, RPM, DEB and NSIS, 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. Download : 7-Zip 4.57 Homepage : 7-Zip
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