RawTherapee
Powerful, cross-platform open source raw photo processing program and a strong alternative to Adobe Lightroom.
Open source alternative to:
RawTherapee is a free, open source raw image processing application available on Linux, macOS, and Windows. It is a long-standing alternative to Adobe Lightroom for photographers who want fine-grained control over the demosaicing, color, and tonal development of their RAW files.
RawTherapee ships with a fully non-destructive editing pipeline, advanced color management, film curve tools, lens correction profiles, and a vibrant community of preset authors. It supports hundreds of camera models and outputs to JPEG, PNG, TIFF, and 16/32-bit formats suitable for further work in GIMP, Krita, or Darktable.
Released under GPL-3.0, RawTherapee is an excellent Lightroom replacement for hobbyist and professional photographers who prefer a desktop-only workflow with no cloud sync, no subscription, and no usage limits.
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Updated 11/4/2026, 10:00:55 AM
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