Add MySQL geometry type to Active Record.

Fast access to database results without the memory overhead of ActiveRecord objects

Easing the query object pattern in Rails applications.

Add support for PostgreSQL's SEQUENCE on ActiveRecord migrations

Changes behavior of Active Record present?

Auditor allows you to declaratively specify what CRUD operations should be audited and save the audit data to the database.

Automatic Foreign Key automatically generates foreign-key constraints when creating tables or adding columns. It uses SQL-92 syntax and as such should be compatible with most databases that support foreign-key constraints.

A highly available, reliable messaging infrastructure

Automatic data change tracking for Ruby on Rails.

BigRecord is built from ActiveRecord, and intended to seamlessly integrate into your Ruby on Rails applications.

bio-ngs provides a framework for handling NGS data with BioRuby

bio-ngs provides a framework for handling NGS data with BioRuby

Switching databases connected with ActiveRecord by Git branch

brtraducao é uma das gems que compoem o Brazilian Rails

Automatically add calculated attributes to ActiveRecord models.

Capture the SQL that is executed when running ActiveRecord migrations so that it can be run in in other environments that don't support migrations.

Subscribe to and build activity feeds for your models, for example followings and friendships

Audit model events like update/create/delete + attribute changes + group them by transaction, in normalized table layout for easy query access.

circuit_switch is a gem for 'difficult' application. This switch helps to make changes easier and deploy safely.

For Rails applications - add creator and updater to your ActiveRecord models and automatically set these from current_user See the README on github for more info