This is a custom gem that extends ActiveRecord to enable the expression of SQL `INSERT INTO ... SELECT ...` queries in a more convenient way. It allows you to copy data from one table to another based on specified conditions using a simple and expressive syntax.

Given an existing MySQL database, Inspectar will dynamically generate activerecord classes for each of the tables.

Instant queue. Background processing and message driven communication tool. Faster and simplier alternative to Resque.

Setup your rails project with everything you need quickly. Not really a Gem, but everything you need is in the gem's files'.

Single table inheritance mechanism built on integer types

after_commit is an ActiveRecord gem to add an after_commit callback. This can be used to trigger things only after the entire transaction is complete.

A gem to follow, follow request and block between any ActiveRecord models.

Internal Affairs integration helper

Module to provide helper methods for interpreting American formatted date strings.

InterstateMachine is a simple state machine which use interactors to trigger transitions

Finds invalid ActiveRecord entries and reports them

A gem that lets you control the flow of products, and orders through invoices

Allows ActiveRecord to hide record data without deleting anything.

Allows ActiveRecord to hide record data without deleting anything.

A magic for life developer.

IP address - integer conversion and activerecord support for ip attribute as integer column

ipcauthpipe gem implements Courier's authpipe protocol to interface Courier POP/IMAP server with Invision Power Board / Converge members database.

A gem to integrate the IPligence database in ruby

This gem allows ActiveRecord models to generate, validate, and clear OTP codes with an expiration time.

When object factories don't work because your data is too complex and creating manual fixtures is cumbersome and brittle: Iron Fixture Extractor (for Rails/ActiveRecord)