Cinepaint
SourceForge Cinepaint
CinePaint is free open source software. The generosity and commitment of its developers, users and sponsors make CinePaint possible.
CinePaint is painting and retouching software primarily used for motion picture frame-by-frame retouching and dust-busting. It has been used on many feature films, including THE LAST SAMURAI where it was used to add flying arrows. CinePaint is different from other painting tools because it supports deep color depth image formats up to 32-bit per channel deep. For comparison, GIMP is limited to 8-bit, and Photoshop to 16-bit.