Mordant - This easy to use, PowerMac-only, 32-bit painting
tool has a
good selection of brushes, and a simple interface. It is designed
to make texture maps rather than normal images, so when you draw off the
edge of the page, the program wraps the line around the edge. Despite
this, it is easy to create great images.
GifConverter - When you save a file from either of the
previous two programs, the file needs to be converted to a web-compatible
format before it can been seen by anyone. GifConverter lets you save
these ".gif" files.