Google Web Toolkit
GWT 2.1 With Server-Side Speed Traces
GWT 2.1 is out now, with a list of new features. The first, is Cell Widgets for creating views on top of large data sets. Cell Widgets can render subsets of a dataset, as though they had fetched the entire dataset. GWT 2.1 also builds up chunks of HTML that is then injected into the DOM, in a 'flyweight' design. GWT 2.1 gets an alternative to GWT-RPC for creating data-oriented services, 'Request Factory,' and an Editor framework for binding data objects to UI fields.