I wasn't sure if it was appropriate to add to this list but I would add SumoPaint to this list. http://www.sumopaint.com/app/ It is an easy to use free online software that works a lot like photoshop. I use it with both my elementary and my college students. Other then that this is an awesome list thanks for sharing.
FotoFlexer is the most powerful online digital photo editor in existence. Use FotoFlexer to perform effects previously available only to professionals using expensive software. * Remove blemishes * Change skin and hair color * Morph photos * Change backgr