This plugin uses the conductor pattern to wrap multiple models as one object

An easy and flexible access control system. Authentication and authorization before a method/action is executed.

Visualization of data and associations represented by Active Record.

Enables metadata crosswalking between ActiveFedora datastreams.

Additional features to activegraph, like sideload limiting, authorizing sideloads etc.

Common validations for ActiveModel

Enhances ActiveModel::Serializers gem by adding support for serializers namespacing. This makes developing versioned APIs super easy. Works with ActiveModel::Serializers 0.8.x series.

Simplifies sending notifications to your end users through multiple channels

Uses RabbitMQ and ActiveRecord for publishing and consuming model events from any service

A modified version of CSV Import using activerecord-import

Fuse attributes from associated models with ActiveRecord

This gem extends active record and it's migrations for oracle queue support.

A ruby gem that makes working with Postgres arrays in ActiveRecord easier

Allows you to use active record with databases that already have an hstore type

PostgreSQL allows to create a procedure which returns a result set. The gem modifies ActiveRecord so that it's possible to create (readonly) model based on resultset instead of a database table.

MySQL Replicaition(master/slave) for ActiveRecord

Convert ActiveRecord objects to plain old ruby objects and vice versa

Monkey-patches ActiveRecord to wrap all methods which use a database connection with #with_connection

ActiveRepo aims to give ActiveRecord objects a wrapper for Repository pattern.

Bearer authentication support for ActiveResource