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fdupes vs dupeGuru: catalog facts
fdupes	dupeGuru
Free Free and open source.	Free Free and open source under the GPL 3.0.
macOS, Linux, Command line	Windows, macOS, Linux
Finds duplicates by file content Interactive or automatic deletion	Fuzzy image matching finds resized and re-encoded copies Separate music mode that compares tags rather than bytes
Terminal only, with no graphical interface Deleting files needs care to avoid removing the wrong copy	Last release was July 2022 and the project is asking for maintainers Fuzzy matching is slow on very large photo collections
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 21, 2026

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