7-Zip

The main features of 7-Zip are: High compression ratio in new 7z format with LZMA compression Supported packing / unpacking formats: 7z, ZIP, GZIP, BZIP2 and TAR Supported formats for unpacking only: ARJ, CAB, CHM, CPIO, DEB, DMG, HFS, ISO, LZH, LZMA, MSI, NSIS, RAR, RPM, UDF, WIM, XAR and Z. Compression ratio for ZIP and GZIP formats: 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