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Duplicate File Finder vs Czkawka: catalog facts
Duplicate File Finder	Czkawka
Freemium A free version is available, and a paid Pro version unlocks more features.	Free Free and open source under the MIT licence, with no advertising.
macOS	Windows, macOS, Linux, Android
Scans external disks and cloud storage folders as well as the Home folder Finds similar photos as well as exact duplicates	Finds duplicates, similar images, similar videos and similar music Written in Rust and multithreaded, with caching for repeat scans
macOS only Some features are reserved for the paid Pro version	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
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 21, 2026

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