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rmlint vs Duplicate Cleaner: catalog facts
rmlint	Duplicate Cleaner
Free Free and open source.	Freemium Free edition available; Duplicate Cleaner Pro is paid.
Linux, Command line	Windows
Very fast duplicate detection on large file trees Finds empty files, empty folders and other lint as well	Finds similar images even after editing or resizing Matches music by audio or tags
Mainly a command-line tool Aimed at Linux and Unix-like systems	Windows only Video matching requires the paid Pro edition
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
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.