Google Wave was announced a few days ago.
It’s a new group collaboration and sharing tool made by Lars and Jens Rasmussen, the brothers behind Google Maps. The demo starts at around 7 minutes. These Google folks never cease to amaze with their wizard-like abilities to build products. Wave uses HTML 5 and V8 to advance browser capability to the level of desktop apps. It’s hard to believe that everything they’re doing in this demo is in Chrome, Safari, and Firefox.