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nomacs vs Xee³: catalog facts
nomacs	Xee³
Free Free and open source under the GPL 3.0.	Paid Paid app; check the website for the current price.
Windows, macOS, Linux	macOS
Opens RAW camera files and Photoshop PSD documents Synchronises pan and zoom between two windows or two machines	Views images inside archives without extracting Supports formats Preview cannot open
Not an editor; adjustments are minimal The interface exposes a lot of panels at once	macOS only Viewer and organiser only, no editing tools
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
No account needed	Not stated if an account is needed
Works offline	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.