7-Zip is a file archiver with a high compression ratio.

7-Zip is free and open-source software. Most of the code is licensed under the GNU LGPL

Some of the program's 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 compression ratios that are 2-10% better than those offered by PKZip and WinZip
  • Strong AES-256 encryption in 7z and ZIP formats
  • Self-extracting capability for 7z format
  • Windows shell integration
  • File manager
  • Command line version