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Czkawka vs Duplicate Cleaner: catalog facts
Czkawka	Duplicate Cleaner
Free Free and open source under the MIT licence, with no advertising.	Freemium Free edition available; Duplicate Cleaner Pro is paid.
Windows, macOS, Linux, Android	Windows
Finds duplicates, similar images, similar videos and similar music Written in Rust and multithreaded, with caching for repeat scans	Finds similar images even after editing or resizing Matches music by audio or tags
The Czkawka GTK interface ends at 12.0; new work goes to Krokiet Similar-image matching produces false positives you must review	Windows only Video matching requires the paid Pro edition
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License not stated
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 24, 2026

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