Compare software

AllDup vs fdupes: catalog facts
AllDup	fdupes
Free Freeware, free for private users and companies.	Free Free and open source.
Windows	macOS, Linux, Command line
Many comparison methods, including similar images and music Scans inside ZIP, RAR and 7Z archives	Finds duplicates by file content Interactive or automatic deletion
Windows only Closed source	Terminal only, with no graphical interface Deleting files needs care to avoid removing the wrong copy
Downloadable app	Downloadable app
Closed source	Open source
License: Freeware	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 24, 2026

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