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Rdfind vs fdupes: catalog facts
Rdfind	fdupes
Free Free software under GPL-2.0-or-later.	Free Free and open source.
Windows, macOS, Linux, Command line	macOS, Linux, Command line
Finds duplicates based on file content rather than filenames Default run creates a results file without removing files	Finds duplicates by file content Interactive or automatic deletion
Windows use is through Cygwin	Terminal only, with no graphical interface Deleting files needs care to avoid removing the wrong copy
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0-or-later	License: MIT
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked September 24, 2026

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