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unar vs The Unarchiver: catalog facts
unar	The Unarchiver
Free Free and open source under the LGPL.	Free Free to download and use. The software is closed source.
Windows, macOS, Linux, Command line	macOS
Same format support as The Unarchiver, in a terminal Runs on macOS, Windows and Linux	Opens almost any archive format with no configuration Handles legacy filename encodings that other extractors mangle
Windows build is slightly outdated No graphical app outside macOS	Extraction only; it cannot create archives
Downloadable app	Downloadable app
Open source	Closed source
License: LGPL-2.1-or-later	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.