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ON1 Photo RAW vs darktable: catalog facts
ON1 Photo RAW	darktable
Paid One-time purchase with no subscription required.	Free Free and open source, funded by donations.
Windows, macOS	Windows, macOS, Linux
Raw processing, organizing and layered editing in one app One-time purchase instead of a subscription	Fully non-destructive: your original raw file is never modified Professional colour management maintained all the way through to print
Proprietary and paid Frequent yearly versions can mean paying again for upgrades	The project itself says it is not a free Adobe Lightroom replacement A steep learning curve; the module list assumes you know the underlying concepts
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 23, 2026	Official website Full listing and sources Checked September 20, 2026

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