7-Zip is a file archiver with a high compression ratio. It’s completely free, and has support for the most used file 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.
Changes in version 4.44 beta:
* Speed optimizations for LZMA, Deflate, BZip2 and unRAR.
* 7-Zip now supports file pathnames longer than 260 characters.
* Some bugs were fixed.
* New localizations:
o Bangla
o Bashkir
o Nepali.