Compare software

fdupes vs Duplicate File Finder: catalog facts
fdupes	Duplicate File Finder
Free Free and open source.	Freemium A free version is available, and a paid Pro version unlocks more features.
macOS, Linux, Command line	macOS
Finds duplicates by file content Interactive or automatic deletion	Scans external disks and cloud storage folders as well as the Home folder Finds similar photos as well as exact duplicates
Terminal only, with no graphical interface Deleting files needs care to avoid removing the wrong copy	macOS only Some features are reserved for the paid Pro version
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	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 September 24, 2026	Official website Full listing and sources Checked October 1, 2026

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