7-Zip: a file archiver with a high compression ratio. (Free app)

7-Zip is free software with open source. The most of the code is under the GNU LGPL license. Some parts of the code are under the BSD 3-clause License. Also there is unRAR license restriction for some parts of the code. Read 7-Zip License information.

Features

  • 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: APFS, 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, VHDX, VMDK, 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

  • Self-extracting capability for 7z format

  • Integration with Windows Shell

  • Powerful File Manager

  • Powerful command line version

  • Plugin for FAR Manager

  • Localizations for 87 languages

7z Format

7z is the new archive format, providing high compression ratio.

The main features of 7z format:

  • Open architecture

  • High compression ratio

  • Strong AES-256 encryption

  • Ability of using any compression, conversion or encryption method

  • Supporting files with sizes up to 16000000000 GB

  • Unicode file names

  • Solid compressing

  • Archive headers compressing

**LZMA is default and general compression method of 7z format. The main features of LZMA method:

**

  • High compression ratio

  • Variable dictionary size (up to 4 GB)

  • Compressing speed: about 2-8 MB/s on 4 GHz CPU (2 cpu threads version).

  • Decompressing speed: about 30-100 MB/s on 4 GHz CPU (1 cpu thread).

  • Small memory requirements for decompressing (depend from dictionary size)

  • Small code size for decompressing: about 5 KB

Platforms

macOS (m64 / x86-64) Windows, Linux

License

7-Zip License

Tags

zip,ace,unzip,rar,7z,7zip,zipx,file compression,folders,tools,tool,utilities,productivity

Resources