7-Zip is a file archiver with a high compression ratio.
Supported formats:
* Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR
* Unpacking only: ARJ, CAB, CHM, CPIO, DEB, DMG, HFS, ISO, LZH, LZMA, MSI, NSIS, RAR, RPM, UDF, WIM, XAR and Z.
http://www.7-zip.org/