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fdupes vs fclones: catalog facts
fdupes	fclones
Free Free and open source.	Free Free and open source under the MIT licence.
macOS, Linux, Command line	Linux, Command line
Finds duplicates by file content Interactive or automatic deletion	Finds duplicates by file content, not by name Many options for limiting the search scope
Terminal only, with no graphical interface Deleting files needs care to avoid removing the wrong copy	Command-line only unless you install the separate GUI Removing files by mistake is easy without a backup
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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