The main features of 7-Zip:

- High compression ratio in the new 7z format
 - Supported formats: 7z, BZIP2, GZIP, TAR, ZIP, ARJ, CAB, CHM, CPIO, DEB, DMG, HFS, ISO, LZH, LZMA, MSI, NSIS, RAR, RPM, UDF, WIM, XAR and Z.
  - Fast compression and decompression
  - Self-extracting capability for 7z format
  - Strong AES-256 encryption in 7z and ZIP formats
  - Integration with Windows Shell
  - Powerful File Manager
  - Powerful command line version
  - Localizations for 74 languages

Download:
7-Zip 4.65 Portable