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Duplicate Cleaner vs Czkawka: catalog facts
Duplicate Cleaner	Czkawka
Freemium Free edition available; Duplicate Cleaner Pro is paid.	Free Free and open source under the MIT licence, with no advertising.
Windows	Windows, macOS, Linux, Android
Finds similar images even after editing or resizing Matches music by audio or tags	Finds duplicates, similar images, similar videos and similar music Written in Rust and multithreaded, with caching for repeat scans
Windows only Video matching requires the paid Pro edition	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
Closed source	Open source
License not stated	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 21, 2026

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