What is a good, open source RoR 3 forum that can easily integrated to an existing application?
Optional features:
Thanks :)
The Rails community has never been focused on developing Ruby/Rails forums, conversely to other languages such as PHP. The evidence of that is a really old news talking about one of the forums prototype ever produces in Rails.
You can still found traces of Beast somewhere, but the real answer is that there's no interesting open source Rails forum available from the time being.