RawTherapee

RawTherapee is a free and open sourceapplication for processing photographs in raw image formats such as those created by many digital cameras. It comprises a subset of operations specifically aimed at non-destructive post-production of raw photos and is primarily focused on improving a photographer's workflow by facilitating the handling of large numbers of images. It is notable for the advanced control it gives the user over the demosaicing and developing process. It is cross-platform, with versions for Linux, macOS, and Microsoft Windows.

RawTherapee was originally written by Gábor Horváth of Budapest, Hungary, and was re-licensed as free and open-source software under the GNU General Public License Version 3 in January 2010. It is written in C++, using a GTK+front-end and a patched version of dcraw for reading raw files. The name "Therapee" was originally an acronym derived from "The Experimental Raw Photo Editor".