At the 2006 JavaOne event, a certain company by the name of Google (they're very big in the search market, apparently) caused quite a buzz with the shock announcement of a new open source API for developing Ajax-heavy web applications. GWT--Google Web Too
The Google Web Toolkit (GWT) has attracted a lot of attention lately as a way to make it easier for developers to add AJAX Web 2.0 features to their applications. Like other approaches, the designers of GWT have tried to insulate developers from having to deal with the underlying JavaScript, which implements these features. GWT achieves this goal of simplifying the creation of advanced client-side JavaScript widgets by generating them from Java code.
RAP Project - FAQ Why does RAP not compile when I check out the sources? This is because some files of the Innoopract code contribution are still missing. The code contribution has been staged in two phases, and phase two is not yet finalized.