Sumopaint is one of the greatest online image editors I’ve tried out so far. If you use Photoshop a lot, the interface for Sumopaint will come very naturally. The setup is virtually identical (but obviously, not as powerful).
In lots of ways, I guess Sumopaint is like Splashup or Photoshop Express, but I guess the webspace for online image editing isn’t quite full yet, so there’s still room for a good competitor like Sumopaint. Either create an image from scratch or upload your own to start the creative process going.
Go and give Sumopaint a try. And make sure you give the star tool a go, because it’s just awesome.
SUMO Paint recently updated to version beta 0.31. Lots of bug fixes, new features and many improvements.