pg-eyeballs is a ruby gem that gives you detailed information about how the SQL queries created by the active record code you write are executed by the database. It gives you an easy, ruby friendly way to see the output of the Postgres EXPLAIN command and integrates with the popular query analysis tool gocmdpev

Simple positioning for Active Record models.

Adds missing native PostgreSQL data types to ActiveRecord and convenient querying extensions for ActiveRecord and Arel

A lightweight cron scheduler for the Que async job worker

Declaratively filter data via URL params, in any Rack app.

The Let's Encrypt certificate manager for rails

Record Cache for Rails 3

Reportable allows for easy report generation from ActiveRecord models by the addition of the reportable method.

Rmre creates ActiveRecord models for legacy database with all constraints found.

Better support for legacy database schemas for ActiveRecord, such as columns named class, or any other name that conflicts with an instance method of ActiveRecord.

A smart sms verification tool

ActiveRecord has always stored the base class in polymorphic _type columns when using STI. This can have non-trivial performance implications in certain cases. This gem adds the 'store_base_sti_class' configuration option which controls whether ActiveRecord will store the base class or the actual class. Defaults to true for backwards compatibility.'

Rails way to harness the power of SQL "EXISTS" statement

Subscribe to changes on ActiveRecord models

A smart sms verification tool

Recursively traverse trees using a single SQL query

ActiveRecord Stand-alone migrations

Awesome patches backported for ActiveRecord MySQL adapters

It is the library to reconnect automatically when ActiveRecord is disconnected from MySQL.

Rails ActiveRecord connector for Google Spanner Database