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fclones vs rmlint: catalog facts
fclones	rmlint
Free Free and open source under the MIT licence.	Free Free and open source.
Linux, Command line	Linux, Command line
Finds duplicates by file content, not by name Many options for limiting the search scope	Very fast duplicate detection on large file trees Finds empty files, empty folders and other lint as well
Command-line only unless you install the separate GUI Removing files by mistake is easy without a backup	Mainly a command-line tool Aimed at Linux and Unix-like systems
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

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