[jballanc]

Instead of piling on with all the usual frameworks (which I do actually use to get work done), let me add one that I've been playing with purely for side-projects/fun:

Escher.jl - http://escher-jl.org

Yes, I primarily use it because it's Julia and I am really enjoying Julia, but it's also a very interesting take on a modern web framework for a modern language (even if it is a bit rough around the edges).