7Zip is a free and open-source file archiver.

Key Features

  • High compression ratio in 7z format thanks to LZMA and LZMA2 algorithms
  • Compression to 7z format is 30-70% better than to ZIP format
  • Compression to ZIP and GZIP formats in 7Zip is 2-10% better than in most other ZIP archivers
  • Password-protected archives with strong AES-256 encryption in 7z and ZIP formats
  • Self-extracting capability for 7z format
  • Integration with Windows Shell
  • File Manager
  • Command-line version
  • Plugin for FAR Manager
  • Translated to 87 languages

Supported file formats

Packing and unpacking:

  • 7z
  • XZ
  • BZIP2
  • GZIP
  • TAR
  • ZIP
  • WIM

Unpacking only:

  • AR
  • ARJ
  • CAB
  • CHM
  • CPIO
  • CramFS
  • DMG
  • EXT
  • FAT
  • GPT
  • HFS
  • IHEX
  • ISO
  • LZH
  • LZMA
  • MBR
  • MSI
  • NSIS
  • NTFS
  • QCOW2
  • RAR
  • RPM
  • SquashFS
  • UDF
  • UEFI
  • VDI
  • VHD
  • VMDK
  • WIM
  • XAR
  • Z

Supported OS

  • Windows 11, 10, 8, 7, Vista, XP, 2016, 2012, 2008, 2003, 2000, NT.
  • macOS (CLI alpha version)
  • Linux (CLI alpha version)

License

Most of the code is available under the GNU LGPL license.

Some parts of the code are available under the BSD 3-clause License.

Also, there is unRAR license restriction for some parts of the code.