An Open Source painting and retouching software primarily used for motion picture
CinePaint is a sophisticated application that supports 8-bit pictures and offers higher color fidelity than similar utilities. It can be used to retouch both image and video files.
The software supports DPX, OpenEXR, 16-bit TIFF, as well as common formats like PNG and JPEG. It runs well on Linux, FreeBSD, Microsoft Windows and Mac OS X operating systems.
CinePaint has been used on many movies, including The Last Samurai, where it was used to add flying arrows.