Alper Dinper continues working on his Summit ExtMap framework.
The reason for this late post is ‘Summit ExtMap’, because I still working on framework to add some new features. The coming release will be separated to 3 different versions as
Summit ExtMap (for ArcGIS JS API Extension for Google Maps)
Summit ExtMapRest (without ArcGIS JS API, works only with ArcGIS REST API and Google Maps API)
ExtOL (Ext JS with OpenLayers supporting ArcGIS REST API)
Now that sounds great; ExtJS and ESRI REST API together. There are reasons why you should not use Silverlight. JavaScript APIs, coupled with JavaScript Frameworks really do give you everything you need to have a great web application.