WebORB for Java is an integration server that provides connectivity between Java backends and multiple desktop, browser and mobile clients. This new release includes integrations with Android (Adobe AIR and native Java), Windows Phone 7, Grails and Google AppEngine. The integration with Android includes both remoting and messaging.WebORB's productivity tools are designed to simplify the integration process. 

Learn more here:http://blog.themidnightcoders.com/index.php/2011/03/29/weborb-for-java-4-1-is-released/