All of the goodness of ActiveModel (validations, callbacks, etc.) along with declarative typed accessors, JSON serialization, and more.

Lightweight utility to create simple JSON Apis

This gem allows you to call consistent responses, making it easier for you to create your API

Patches ActiveRecord to make models returned from custom queries respond much faster.

Resque plugin to fail over to ActiveRecord backend for Resque job storage, when Redis is unavailable.

add rake task for resque to await DB migration of activerecord

Enable send_later support for Resque. Includes support for mongoid backends. Based on the original resque-delay gem by Michael Ryko.

ensure active record connections are valid before performing resque background jobs

Adds persistence to Resque jobs, and retry properties

Enable ActiveRecord query cache for Resque jobs

An Active Record model can be defined as 'queueable'. That adds extensions to add any method to the queue that exists on the method instance.

Ruby Apple Address Book Interface and Tools

Retrying once if raise a RecordNotUnique

Retries an operation on an ActiveRecord until no StaleObjectError is being raised.

A gem to handle deadlocks in ActiveRecord by retrying transactions and logging details.

Simple implementation of RETURNING for ActiveRecord

Reversible Data provides migration-like functionality for tests etc - All with temporary models.

Backup data is saved to yaml files. The reverse process load the yaml and restores the records. Works for new and updates not for deletions.

Adds Review and Approval functionality for content sites.

A simple Rails plugin which creates revisions of your model and comes with an equally simple HTML differ.