Supported formats: Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR Unpacking only: RAR, CAB, ARJ, LZH, CHM, Z, CPIO, RPM and DEB For ZIP and GZIP formats 7-Zip provides compression ratio that is 2-10 % better than ratio provided by PKZip and WinZip HomePage & Download