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

This gem patches AASM to use PowerEnum enums for states.

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