http://developers.slashdot.org/article.pl?sid=06/12/12/1724252
Okay – so when do we start migrating the Sakai UI to GWT? 
“When we first released the Google Web Toolkit (GWT) we were focused on building a great tool for people to build AJAX apps with. Now, we’re happy to announce that all of the GWT source code is available, including the Java to JavaScript compiler and the debugging browser, under the Apache 2.0 license…”
