Klowdz:http://www.klowdz.com/
Sketchpad : http://mugtug.com/sketchpad/
Aviary : http://www.aviary.com/html5editor
Picnik:http://www.picnik.com/
Photoshop Express Editor : http://www.photoshop.com/
uupoop : http://www.uupoop.com/
Pixlr Editor : http://pixlr.com/editor/
FotoFlexer:http://fotoflexer.com/
Sumo Paint : http://www.sumopaint.com/app/