Echomap

I've only gotten to use this framework for a few months, but I love it. It is both a very powerful framework and yet easy. It makes java serverside programming almost as easy as putting together a simple webapp with PHP.

I think that I see this all too much: Webapps configured inside the webapp... so that you have to unpack the webapp to change a configuration item, then repack it and redeploy it... there are better ways...