Mongify allows you to map your sql data into a mongodb document database with a simple DSL.

Create temporary table-backed ActiveRecord models for use in tests

Easily create robust, standardized API endpoints using lightning-fast database queries

Port of the Rails plugin "geokit-rails" to Rails 3, as a gem

mail_room will proxy email (gmail) from IMAP to a delivery method

Extend ActiveRecord pluck to return hash instead of an array. Useful when plucking multiple columns.

Real PostgreSQL 9.5+ upserts using ON CONFLICT for ActiveRecord

ActiveRecord provides validations on app level but it won't guarantee the consistent. In some cases, like `validates_uniqueness_of` it executes additional SQL query to the database and that is not very efficient. The main goal of the gem is to provide compatibility between database constraints and ActiveRecord validations with better performance and consistency.

You'll be in stitches at how easy it is to create a service at Stitch Fix

Surus accelerates ActiveRecord with PostgreSQL specific types and functionality. It enables indexed searching of serialized arrays and hashes. It also can control PostgreSQL synchronous commit behavior. By relaxing PostgreSQL's durability guarantee, transaction commit rate can be increased by 50% or more.

Implements minimal ActiveRecord models and database helper code used in both the Metasploit Framework (MSF) and Metasploit commercial editions.

Obtain ActiveRecord results with a custom ordering with no need to store anything in the database.

Easy CLI tool for making non-blocking zero downtime schema changes in PostgreSQL

Store difference kind of actions (Like, Follow, Star, Block ...) in one table via ActiveRecord Polymorphic Association.

Make user messageable!;-)

A fast, safe, simple direct SQL executor for PG

Extends ActiveRecord::Store.store_accessor

ActiveRecord migration helpers to avoid downtime

ActsAsBookable is a reservation engine for Rails applications that allows resources to be booked. You can define availability rules for bookable models and set costraints to implement different types of booking (hotels, theaters, meeting rooms...)

Extends your user model with friendships management methods