Compare software

nomacs vs FlowVision: catalog facts
nomacs	FlowVision
Free Free and open source under the GPL 3.0.	Free Free and open source.
Windows, macOS, Linux	macOS
Opens RAW camera files and Photoshop PSD documents Synchronises pan and zoom between two windows or two machines	Waterfall layout that preserves image proportions Browses both images and videos
Not an editor; adjustments are minimal The interface exposes a lot of panels at once	macOS only A browser and viewer, not an editor
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 1, 2026

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