Sort of. It was part of GNU, now it's sponsored by the GNOME Foundation, but I don't think it is considered a "GNOME App". As per https://discourse.gnome.org/t

Sort of. It was part of GNU, now it's sponsored by the GNOME Foundation, but I don't think it is considered a "GNOME App". As per https://discourse.gnome.org/t/relation-between-gimp-and-gnome/2376 https://discourse.gnome.org/t/relation-between-gimp-and-gnom...: "The GNOME Foundation provides the GNU Image Manipulation Program community and developers with services like fiscal sponsorship, technical infrastructure, promotion, and copyright assignment." However, it's not considered a GNOME "Core App" or even a "Circle App" (see https://apps.gnome.org/ https://apps.gnome.org/) and I believe that it doesn't attempt to follow the GNOME guidelines or have any GNOME designers/developers working on it.