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Gemini 2 vs AllDup: catalog facts
Gemini 2	AllDup
Freemium Free download, with a paid license available to buy from MacPaw.	Free Freeware, free for private users and companies.
macOS	Windows
Finds similar files as well as exact duplicates Scans Photos and Music libraries	Many comparison methods, including similar images and music Scans inside ZIP, RAR and 7Z archives
macOS only Full use requires a paid license	Windows only Closed source
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License: Freeware
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 24, 2026

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