Use the GraphiQL IDE for GraphQL with Ruby on Rails. This gem includes an engine, a controller and a view for integrating GraphiQL with your app.

Search Engine Optimization (SEO) plugin for Ruby on Rails applications.

A fully featured and advanced HTML5 WYSIWYG editor written in CoffeeScript on top of the Rails asset pipeline

This gem wraps the blueimp JavaScript Templates library as a Rails asset gem. The library is by Sebastian Tschan, and the gem is packaged by Mike Virata-Stone.

Cucumber Generator and Runtime for Rails

BestInPlace is a jQuery script and a Rails helper that provide the method best_in_place to display any object field easily editable for the user by just clicking on it. It supports input data, text data, boolean data and custom dropdown data. It works with RESTful controllers.

Simple health check of Rails app for uptime monitoring with Pingdom, NewRelic, EngineYard etc.

An Action Dispatch session store backed by an Active Record class.

Translations for the devise gem

Wicked is a Rails engine for producing easy wizard controllers

This gem provides Switchery driver for your Rails application

The push notification service for Ruby.

Rake tasks to migrate data alongside schema changes.

Provides the generator settings required for Rails to use Slim

Take a peek into your Rails application.

A multithreaded, Postgres-based ActiveJob backend for Ruby on Rails

Gives letter_opener an interface for browsing sent emails

Rails observer (removed from core in Rails 4.0)

This gem wraps the blueimp JavaScript Canvas to Blob library as a Rails asset gem. The library is by Sebastian Tschan, and the gem is packaged by Mike Virata-Stone.

jVectorMap for the Rails asset pipeline