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Fotocx vs Tonfotos: catalog facts
Fotocx	Tonfotos
Free Free and open source under the GPL version 3.	Freemium Free download for Windows, macOS and Linux, with a paid version available.
Linux	Windows, macOS, Linux, Android
Editor and collection manager in one program No tracking or advertisements	Face recognition that learns from photos you have tagged Treats PC, drives and NAS as one archive
Linux only Small, single-developer project	Not open source Some features require the paid version
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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