Awesome patches backported for ActiveRecord MySQL adapters

MySQL index hint support for ActiveRecord

Rescue from MySQL and Sqlite duplicate errors

With Amountable, you can easily attach, organize and sum Ruby money fields to your models without migrating.

Brainstem allows you to create rich API presenters that know how to filter, sort, and include associations.

integrated library system

hydra_attribute is an implementation of EAV pattern for ActiveRecord models.

mysql2 plugin supporting aurora failover.

Let ActiveRecord serialize and cast your UUIDs to and from binary columns in your database.

A Rails engine that adds a piece of middleware to the top of your middleware stack that looks for redirect rules stored in your database and redirects you accordingly.

Track what product being viewed, what being purchased. Who are consistant buyers etc.

Enable using native sql enums

Manage delta indexes via Delayed Job for Thinking Sphinx

Jcrop plugin for ActiveAdmin, enable image cropping solution on image fields

N+1 count query killer for ActiveRecord

This is an ActiveRecord connection adapter for MySQL Spatial Extensions. It is based on the stock MySQL2 adapter, but provides built-in support for spatial columns. It uses the RGeo library to represent spatial data in Ruby.

N+1 count query killer for ActiveRecord

Yet Another N+1 COUNT Query Killer for ActiveRecord

Add relational OLAP-like functionality for ActiveRecord

https://github.com/tsukasaoishi/fresh_connection