OpenID support for Ruby on Rails application

Question

What is current state of the art for enabling OpenID login in Ruby on Rails applications? This is a community wiki with up-to-date answers to this question.

Authlog

Answer 1

Check out this Railscast on OpenId for more info. I'm not sure if/how it might work alongside restful_authentication, but might be a good resource. (I haven't watched it yet)