7Zip is 100% free Open Source archiver.
The main 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 of 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 archive formats
Packing and unpacking:
Windows 10, 8, 7, Vista, XP, 2016, 2012, 2008, 2003, 2000, NT.
The 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.