Very cool implementation of GWT (Google Web Toolkit)

The people over at MediaBeacon have a really impressive looking browser application which only uses basic web browser code (i.e. no plugins like Flash or SilverLight). Supposedly it written with the Google Web Toolkit. I hear that the impressive Google Wave application was also written with it.

Check out this video demo of the interface.
http://videos.mediabeacon.com/SneakPreview-R3volution3.mov

GWT must be some impressive technology. Has anyone else tried it?

It very similar to extjs 3.0

I think it’s based on it in fact, to much element and behaviour are similar.