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AllDup vs Gemini 2: catalog facts
AllDup	Gemini 2
Free Freeware, free for private users and companies.	Freemium Free download, with a paid license available to buy from MacPaw.
Windows	macOS
Many comparison methods, including similar images and music Scans inside ZIP, RAR and 7Z archives	Finds similar files as well as exact duplicates Scans Photos and Music libraries
Windows only Closed source	macOS only Full use requires a paid license
Downloadable app	Downloadable app
Closed source	Closed source
License: Freeware	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it 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.