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Xee³ vs nomacs: catalog facts
Xee³	nomacs
Paid Paid app; check the website for the current price.	Free Free and open source under the GPL 3.0.
macOS	Windows, macOS, Linux
Views images inside archives without extracting Supports formats Preview cannot open	Opens RAW camera files and Photoshop PSD documents Synchronises pan and zoom between two windows or two machines
macOS only Viewer and organiser only, no editing tools	Not an editor; adjustments are minimal The interface exposes a lot of panels at once
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 21, 2026

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