The simplest way to handle the primary or default flag to your models.

Manage model with a period on ActiveRecord.

Worker and enqueuer for Q4M using the interface of ActiveJob.

CLI for the lazy people working on PrestaShop so you don't have to type.

simple_nested_set allows to easily handle nested sets in ActiveRecord

Connection proxy for ActiveRecord for master / replica setups.

Provides development and test environment for Brighter Planet's impact model libraries.

This gem provides an acts_as_list compatible capability for sorting and reordering a number of objects in a list. The class that has this specified needs to have a +position+ column defined as an integer on the mapped database table. This gem requires ActiveRecord 3.0 as it has been refactored to use the scope methods and query interface introduced with Ruby on Rails 3.0

Special Delivery is a Rails engine that enables powerful and easy-to-use callbacks in response to Mailgun events POSTed via webhook.

State of the Nation makes modeling object history easy.

Statistic and analysis in Ruby DSL, just as simple as SQL operations in ActiveRecord.

Provides Horizontal-sharing for ActiveRecord

Simple tool to import/export databases inspired by taps but OOB, meaning databases are imported/exported from the filesystem.

Thebes is a thin binding layer for Rails and Sphinx via Riddle and Mysql2. Thebes expects you to write Sphinx configuration files by hand and have a rich understanding of Sphinx, but provides configuration files and templates to ease the process.

TinyMCE wrapper, that takes care of managing media files (images, videos) and links within your Rails application.

Define transient tables and Active Record models for testing purposes.

Manage delta indexes via Sidekiq for Thinking Sphinx

This Vagrant plugin allows you to configure a vm environment as a node in a client/server infraestructure. See also vagrant-nodemaster

WpdbActiverecord gives you a painless way to access and interact with WordPress from ActiveRecord, accessing posts, tags, and all other WordPress concepts as plain-old Ruby objects.

Token based authentication. To support backend authentication for ios, android, angular, ember etc...