It was predicted long back that RIA (Rich internet Applications) no longer needs Flash’s domination. AJAX/ JQuery, HTML 5, CSS will together form the best army against the closed Flash (which can’t be open sourced).
The Latest web application “SketchPad” let’s you do a lot in your web browser. I’m deeply impressed by the capability of this app.
Sketchpad by Mugtug is a Pixelmator-like application that has desktop like tools, colour selection, patterns, swatches, all built using HTML5 and CSS. The performance is pretty good even on Firefox. And on Chrome 5 it was as good as any Desktop app, perhaps faster than Photoshop.
It will not replace your current desktop image editor, but it’s a tool you must check out and admire for what it is.