B.7z

License. 7-Zip is free software with open source. The most of the code is under the GNU LGPL license.

The file format and its primary software, 7-Zip , are widely regarded as the gold standard for high-ratio, lossless file compression. This open-source tool is often cited as a "must-have" for Windows users due to its versatility and efficiency. Performance & Compression License

: It features robust AES-256 encryption for both file data and archive headers. License