The Free and Open Source painting program, "
MyPaint", recently released version 1.0.
Whereas GIMP is primarily directed toward manipulation of pre-existing images and creation of graphical renderings, MyPaint's focus is on supporting the processes of painting and drawing in a manner more familiar to traditional artists. In conjunction, the two programs can be exploited to great effect, as exhibited by much of the artwork produced by
Griatch and shared on these forums (and who has written quite a few tutorials on his methods).
Congratulations to the MyPaint developers on reaching this milestone and thanks for sharing the product of your efforts with the Free Software community.