Inkbunny - Helping furry artists and story-tellers share their work.
PaintBerri - PaintBerri is a free art site that offers an awesome oekaki community.
Hamail Art Gallery - Hamail Art Gallery is one of the leading art galleries providing an online platform to the creators and skillful people to show their stuff.
okekai - A small community site where you can draw, animate, and chat through pictures all for free
Weasyl - Open-source social art gallery
Brush Ninja - Hand-drawn Animated Gif Creator