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Lyn vs nomacs: catalog facts
Lyn	nomacs
Paid Paid app with a fully featured 15-day free trial.	Free Free and open source under the GPL 3.0.
macOS	Windows, macOS, Linux
Reads RAW, HDR and all formats macOS supports Non-destructive editing with curves and levels	Opens RAW camera files and Photoshop PSD documents Synchronises pan and zoom between two windows or two machines
macOS only Paid after the 15-day trial	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
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 21, 2026

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