Better GWT by extension

Two projects hosted in google code gives GWT a much better UI.

gwt-ext

GWT-Ext is a library that integrates Ext with GWT.

gwt-yui-ext

GWT API library to support yui-ext within the GWT framework. This library allows you to freely mix GWT widgets/panels etc with yui-ext elements.

Grid

I like gwt-ext grid with inline editing support