You can use 7-Zip on any computer, including a computer in a commercial organization. You don’t need to register or pay for 7-Zip.  High compression ratio in new 7z format with LZMA compression.  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 74 languages.
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