I'm taking a look at
- Cloud9 IDE - I like it for javascript, and it integrates with Github. Not too shabby, although it's better suited for running on one's own server.
- Sumo Paint, which seems like a really robust paint package, more focused on painter-style stuff, though
- Pixlr editor, which is fairly impressive. Layers, shortcuts and so forth. I think I could do either digipaint or pixel stuff with it.
- Email Game - I... think I can recommend it. It's exactly what it says on the tin - it makes a game out of checking your Email.
- Ajax Animator is so far failing to load.