What is a good Ruby on Rails forum that can easily integrated to an existing application?

What is a good, open source RoR 3 forum that can easily integrated to an existing application?

Optional features:

• OpenID support
• Haml/SCSS templates
• Supp开发者_JAVA技巧ort for smilies, YouTube, images, etc
• I'm probably going to change it alot, and I'm still pretty weak in Ruby, so clean, commented code with good practices would be great.

Thanks :)

Recently I was searching for similar functionality and came across discourse. You should definitely check it out.

Discourse is the 100% open source, next-generation discussion platform built 
for the next decade of the Internet.

Whenever you need ...

a mailing list
a forum to discuss something
a chat room where you can type paragraphs

... consider Discourse.

Its developed by Jeff Atwood and team

Have a look on http://github.com/radar/rboard the most powerful and poplar in Rails world at the moment

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.

Thredded does all of this and more.

Because Thredded is a Rails engine, it is very easy to integrate it into an existing app.

have you looked at Forulio ? Seems like you can build on it . Looks decent to start with.