Compare software

Gemini 2 vs Czkawka: catalog facts
Gemini 2	Czkawka
Freemium Free download, with a paid license available to buy from MacPaw.	Free Free and open source under the MIT licence, with no advertising.
macOS	Windows, macOS, Linux, Android
Finds similar files as well as exact duplicates Scans Photos and Music libraries	Finds duplicates, similar images, similar videos and similar music Written in Rust and multithreaded, with caching for repeat scans
macOS only Full use requires a paid license	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 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.