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RawTherapeedarktable
Free

Free and open source under GPLv3.

 Free

Free and open source, funded by donations.

Windows, macOS, Linux Windows, macOS, Linux
  • Non-destructive 32-bit floating point processing engine
  • Two demosaicing algorithms can be applied to the same image
  • Fully non-destructive: your original raw file is never modified
  • Professional colour management maintained all the way through to print
  • The project itself says it benefits users who take the time to learn it
  • No library or catalogue management; it develops files, it does not organise them
  • 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
Open source Open source
License: GPL-3.0 License: GPL-3.0
No account needed No account needed
Works offline Works offline

Checked September 20, 2026

Checked September 20, 2026

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