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vipsdisp vs nomacs: catalog facts
vipsdisp	nomacs
Free Free and open source under the MIT licence.	Free Free and open source under the GPL 3.0.
Windows, Linux	Windows, macOS, Linux
Built on the libvips image library Small, focused viewer with a GTK 4 interface	Opens RAW camera files and Photoshop PSD documents Synchronises pan and zoom between two windows or two machines
No packaged releases on GitHub Viewer only, with no editing tools	Not an editor; adjustments are minimal The interface exposes a lot of panels at once
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 21, 2026

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