CommunityEngine is a free, open-source social network platform for Ruby on Rails applications. Drop it into your new or existing application, and you’ll instantly have all the features of a basic community site.

Adds support for creating enum state machines for attributes on any Ruby class

Introduces Aggregated and Tracked behavior to ActiveRecord::Base models, as well as Macros and Extensions modules for more efficient usage.

This gem patches AASM to use PowerEnum enums for states.