Compare software

nomacs vs feh: catalog facts
nomacs	feh
Free Free and open source under the GPL 3.0.	Free Free and open source under a variant of the MIT licence.
Windows, macOS, Linux	Linux, Command line
Opens RAW camera files and Photoshop PSD documents Synchronises pan and zoom between two windows or two machines	Fast and light, usable entirely from the keyboard Slideshow, thumbnail, list and multiwindow modes
Not an editor; adjustments are minimal The interface exposes a lot of panels at once	X11 only Minimal interface with no editing tools
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: MIT-feh
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 23, 2026

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