7-Zip is a file archiver with a high compression ratio. High compression ratio in 7z format with LZMA and LZMA2 compression. SUPPORTED FORMATS: Packing / unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM. Unpacking only: ARJ, CAB, CHM, CPIO, CramFS, DEB, DMG, FAT, HFS, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, RAR, RPM, SquashFS, UDF, VHD, WIM, XAR and Z. For ZIP and GZIP formats, 7-Zip provides a compression ratio that is 2-10 % better than the ratio provided by PKZip and WinZip.