7-Zip is a file archiver with a high compression ratio. The main features of 7-Zip are:

* 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: AR, ARJ, CAB, CHM, CPIO, CramFS, DMG, EXT, FAT,
GPT, HFS, IHEX, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, QCOW2,
RPM, SquashFS, UDF, UEFI, VDI, VHD, VMDK, 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
* Strong AES-256 encryption in 7z and ZIP formats
* Powerful command line version