What's the simplest, most concise web technology to build an app with on Google App Engine?

Question

Now that Java has allowed multiple additional languages to run on top of Google App Engine, which of the newly available languages would allow an app to be developed the most simply and concisely? Let's assume most people are aware of Ruby on Rails, PHP, Coldfusion and Python/Django and we can take for granted that these are pretty simple and concise. Excluding these, which technology that is now available because of Java would surprise people to know how simple and concise it is to develop a web app in?

Answer 1

I think JAX-RS is probably the simplest and most concise for Java. Both Jersey and Restlet are available for google appe engine.

Take a look here for the supported Java frameworks in Google App Engine.

Answer 2

Google has made it very easy with their Eclipse plugin for App Engine to develop in GWT which can give web apps a very AJAXy web 2.0 feel without much effort.

Answer 3

It's not exactly clear what concrete attributes you're looking for. Conciseness is all very well, until it interferes with readability. As far as simplicity goes, Java or Python are going to be the simplest options for a while, simply because they're officially supported and have fully developed APIs.