7-Zip (also written as 7zip) is a free, open source (under GNU LGPL license) file archiver for Microsoft® Windows®. It is one of the best, free file archivers that comes with a high compression ratio.
The default archive format is 7z but it works (read and write) other popular archive formats. You can use the program in three ways: from its graphical user interface (most popular), a command line interface or as a shell integration. The default 7z file format offers one of the highest compression ratio (using LZMA and LZMA2 - Lempel–Ziv–Markov chain algorithm an algorithm used for lossless data compression) that's why this app is probably the most popular free file archiver.
Trademark Note 1: Microsoft®, Windows® and other product names are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.
- high compression ratio in 7z format using LZMA/LZMA2 compression
- packing/unpacking support for 7z, ZIP, TAR, BZIP2, GZIP
- unpack only for RAR, RPM, ARJ, CAB, CHM, CPIO, CramFS, DMG, DEB, FAT, ISO, HFS, LZH, LZMA, MBR, NTFS, MSI, NSIS, SquashFS, XAR, Z, VHD, WIM
- one of the best compression ratio for ZIP and GZIP formats
- support for AES-256 encryption when using 7z and ZIP formats
- Windows Shell integration
- self-extracting capability available for 7z format
- File Manager and command line version available
- Plugin available for FAR Manager
- support for most languages (79)