Turkcell Technology (the company I work for) announced its first open source framework called Isola.
It depends on ExtJS layer. Since It is hard to write ExtJS without any tool. This framework makes it easier. You may write the code as java code. I wrote it in some project. It is really efficient. Thanks Infrastructure Team ;)
You may check the web page : http://labs.turkcellteknoloji.com.tr/magnoliaPublic/isola.html