acts_as_recursive_tree by 1and1

Empower PostgreSQL migrations in Rails app. Maintained by nepalez on GitHub, where it has earned 147 stars from the community.

Textacular exposes full text search capabilities from PostgreSQL, and allows you to declare full text indexes. Textacular will extend ActiveRecord with named_scope methods making searching easy and fun!. Maintained by textacular on GitHub, where it has earned 955 stars from the community.

Active Record extension providing slotted counters support. Maintained by evilmartians on GitHub, where it has earned 116 stars from the community.