Commonly Compared
Sumo Paint
vs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Has most of standard Photoshop filters
Pro Has a Chrome App
Chrome app can be downloaded here.
Pro Has advanced layers support
Pro Can save to cloud, locally, or directly copy to clipboard
Cons
Con Requires Flash
Con Slow to open
Sumo Paint is pretty slow to open when compared to other online photo editors.
Con Lacks drag and drop support 
Doesn't yet support dragging & droping images in to the browser window.
Con Cannot zoom using mouse wheel
Commonly Compared
Sumo Paint
vs