RawTherapee

RawTherapee is a free, open-source raw image processing app for photographers and hobbyists. It enables non-destructive editing with advanced tools like exposure adjustment, color grading, noise reduction, lens correction, and histogram tweaks. Supporting hundreds of camera raw formats, it preserves image quality while letting users fine-tune details like white balance, sharpness, contrast, and more. With customizable workspaces, batch processing, and detailed parameter control, it’s ideal for those seeking professional-grade editing without subscription fees.