Compare software

dupeGuru vs Czkawka: catalog facts
dupeGuru	Czkawka
Free Free and open source under the GPL 3.0.	Free Free and open source under the MIT licence, with no advertising.
Windows, macOS, Linux	Windows, macOS, Linux, Android
Fuzzy image matching finds resized and re-encoded copies Separate music mode that compares tags rather than bytes	Finds duplicates, similar images, similar videos and similar music Written in Rust and multithreaded, with caching for repeat scans
Last release was July 2022 and the project is asking for maintainers Fuzzy matching is slow on very large photo collections	The Czkawka GTK interface ends at 12.0; new work goes to Krokiet Similar-image matching produces false positives you must review
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 21, 2026

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