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A Photo Tool (Libre) vs Fotocx: catalog facts
A Photo Tool (Libre)	Fotocx
Free Free to download and use under the GPLv3.	Free Free and open source under the GPL version 3.
Linux	Linux
Straightforward exposure and color adjustments Custom black-and-white conversion	Editor and collection manager in one program No tracking or advertisements
Limited file format support beyond JPEG No layers or advanced retouching	Linux only Small, single-developer project
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 24, 2026

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