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gThumb vs Pix: catalog facts
gThumb	Pix
Free Free and open source under the GPL version 2 or later.	Free Free and open source.
Linux	Linux
Native GNOME desktop application Works on local folders without a server	Thumbnail browsing of image folders Works across Linux distributions and desktops
Linux only No cloud sync or phone backup	Linux only Fewer editing features than dedicated photo editors
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0-or-later	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

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