Struts2. Very lightweight and its gets out of your way. Since it is Java we get to leverage some of the incredible Java libraries out there like Guice. We've

Struts2. Very lightweight and its gets out of your way. Since it is Java we get to leverage some of the incredible Java libraries out there like Guice. We've tried a few other frameworks. We build our prototype in web.py. Very simple, but I couldn't get used to not living in IntelliJ. We tried a previous project in Rails, but it did too much 'magic' for us and the scaffolding seemed a bit too brittle. To be fair the last time I used Rails in production was in the 1.1 days, so it's been a while.