Doorkeeper is an OAuth 2 provider for Rails.

Reconnaissance tool for GitHub organizations

factory_girl_rails provides integration between factory_girl and rails 3 or newer (currently just automatic factory definition loading)

A Rails engine that allows any model to act as messageable, adding the ability to exchange messages with any other messageable model, even different ones. It supports the use of conversations with two or more recipients to organize the messages. You have a complete use of a mailbox object for each messageable model that manages an inbox, sentbox and trash for conversations. It also supports sending notifications to messageable models, intended to be used as system notifications.

Synapse is a daemon used to dynamically configure and manage local instances of HAProxy as well as local files in reaction to changes in a service registry such as zookeeper. Synapse is half of SmartStack, and is designed to be operated along with Nerve or another system that registers services such as Aurora.

Social Stream is a Ruby on Rails engine for building social network websites. It supports contacts, posts, file uploads, private messages and much more.

Devise extension to allow authentication via LDAP

A rails (gem) plugin to enable surveys in your application

Git history statistics generator

acts_as_follower is a Rubygem to allow any model to follow any other model. This is accomplished through a double polymorphic relationship on the Follow model. There is also built in support for blocking/un-blocking follow records. Main uses would be for Users to follow other Users or for Users to follow Books, etc… (Basically, to develop the type of follow system that GitHub has)

Nerve is a service registration daemon. It performs health checks on your service and then publishes success or failure into one of several registries (currently, zookeeper or etcd). Nerve is half or SmartStack, and is designed to be operated along with Synapse to provide a full service discovery framework

Pure Ruby readonly serializers for the JSON:API spec.

Simple OAuth 2.0 provider toolkit

Wiselinks makes following links and submitting some forms in your web application smarter and faster

[DEPRECATION] 'attr_searchable' is deprecated. Migrate to 'search_cop' instead.

Add wishlists to Spree

Simplified command-line administration for Kafka brokers

Adds address book for users to Spree

Add a blog to your Rails application in minutes with this mountable Rails Engine

A Chargify API wrapper for Ruby using ActiveResource