RawTherapee

RawTherapee is a photo editing software for raw data for Linux, Windows or MAC systems. Focusing on raw data from a wide selection of digital cameras, these can be edited with a number of different tools. This free tool uses demosaicing algorithms and includes different functions for color and detail editing of the images. Among other things, ghost markings, multiple-frame raw files or flat-field corrections can be used for optimizing and editing photos.