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fdupes vs rmlint: catalog facts
fdupes	rmlint
Free Free and open source.	Free Free and open source.
macOS, Linux, Command line	Linux, Command line
Finds duplicates by file content Interactive or automatic deletion	Very fast duplicate detection on large file trees Finds empty files, empty folders and other lint as well
Terminal only, with no graphical interface Deleting files needs care to avoid removing the wrong copy	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 24, 2026	Official website Full listing and sources Checked September 24, 2026

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