An update of GrafX (v2.1) is available.

It's a bitmap paint program that allows to draw in more than 60 video resolutions (from 320x200, including most of the standard Amiga resolutions, provided your videocard knows how to handle them). It was written originally for DOS, but has been modified to use SDL and modern operating systems. Its layout is not very different from Deluxe Paint or Brilliance.