Record Cache for Rails 3

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

Awesome patches backported for ActiveRecord MySQL adapters

MySQL index hint support for ActiveRecord

N+1 count query killer for ActiveRecord

Rescue from MySQL and Sqlite duplicate errors

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

integrated library system

https://github.com/tsukasaoishi/fresh_connection

RailsDbInfo is a Rails engine that quickly shows the database info

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

TrustyCms is a simple and powerful publishing system designed for small teams. It is built with Rails and is similar to Textpattern or MovableType, but is a general purpose content management system--not merely a blogging engine.

Manage delta indexes via Delayed Job for Thinking Sphinx

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.

Yet Another N+1 COUNT Query Killer for ActiveRecord

I am altria.

Birthday gem creates convienent methods for date and datetime fields in ActiveRecord, making it possible to look for birthdays without a hassle.

Lazily loads large columns on demand. By default, does this for all TEXT (:text) and BLOB (:binary) columns, but a list of specific columns to load on demand can be given. This is useful to reduce the memory taken by Rails when loading a number of records that have large columns if those partic...