An awesome nested set implementation for Active Record

Create and modify your notifications through a simple API.

A Postgres advisory lock client

RGeo is a geospatial data library for Ruby. RGeo::ActiveRecord is an optional RGeo module providing some spatial extensions to ActiveRecord, as well as common tools used by RGeo-based spatial adapters.

A modern fast tagging framework for Rails 3.1+

SchemaValidations extends ActiveRecord to automatically create validations by inspecting the database schema. This makes your models more DRY as you no longer need to duplicate NOT NULL, unique, numeric and varchar constraints on the model level.

Log transitions on a state_machines to support auditing and business process analytics.

Translatable columns for Rails 4.2 or better, stored in the model table itself.

Suffering from ActiveRecord instantiation anxiety? Try Valium. It saves your CPU and memory for more important things, retrieving just the values you're interested in seeing.

Any_of allows to compute dynamic OR queries.

Associate a Ruby PORO with an Active Record class and have it quack like one.

This gem logs where ActiveRecord actually loads record

Never worry about weird diffs and merge conflicts again

An Active Record extension for creating associations through lateral joins

Integrate PostgreSQL's enumerated types with the Rails enum feature

Adds support for postgres arrays to ActiveRecord

Refresh ActiveRecord connection on each rack request.

Redirect ActiveRecord (Rails) reads to replica databases while ensuring all writes go to the primary database.

Redirect ActiveRecord (Rails) reads to slave databases while ensuring all writes go to the master database.

ActiveRecord sharding extension