PaintBerri - PaintBerri is a free art site that offers an awesome oekaki community.
Libris - Libris is an asset management for photos and videos.
slimanimation - to make stick figure or hand drawn animations
picinfinity - Picinfinity is an image retaining/proxy site.
FurAffinity - Fur Affinity, the internet's largest online furry art community.
Imagesocket - A different kind of image hosting