I'm researching how best to create a Restful web service on Google app engine. My end goal is to have an Android application call a web service on GAE to post and get data. At this point I not sure what the best approach is. What I know at this point is Spring MVC 3 provide the ability to create web service but it does not provide a full implementation of JAX-RS. I also have read a few blog that talk about how Spring and Restlet can be integrated together. On the other side I have read that I could only use Restlet in GAE. I would also like provide a light web interface for users to view their posted data So my questions are the following. 1. Should I just use Restlet. 2. Should I just use Spring MVC to provide my Restful web service. 3. Should I use Spring and Restlet together. At this point I think I should invest my time in Restlet because that seems to be the best approach for calling web services in Android. I'm also debating if Spring MVC is just over kill. Any thoughts would be helpful.