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darktable vs A Photo Tool (Libre): catalog facts
darktableA Photo Tool (Libre)
Free

Free and open source, funded by donations.

Free

Free to download and use under the GPLv3.

Windows, macOS, Linux Linux
  • Fully non-destructive: your original raw file is never modified
  • Professional colour management maintained all the way through to print
  • Straightforward exposure and color adjustments
  • Custom black-and-white conversion
  • 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
  • Limited file format support beyond JPEG
  • No layers or advanced retouching
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0 License: GPL-3.0-or-later
No account needed Not stated if an account is needed
Works offline Works offline

Checked September 20, 2026

Checked October 1, 2026

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