Any Ruby on Rails equivalent to Pinax?

Pinax is:

An integrated col开发者_StackOverflow中文版lection of Django applications that provides the most commonly needed social networking features, including openID support, email verification, site announcements, user-to-user messaging, friend invitations, interest groups with discussions, wikis, and more.

Cloud27 is a demonstration of Pinax

Any equivalent in Ruby on Rails?

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maybe you also want to take a look at the following entry on stackoverflow that has a similar topic: Social Network in Rails - which framework