This gem allows you to build forms for user submission and can send email notifications when a form is filled out.

Leveraging Doorkeeper as single-sign-on OAuth server. To provide true single-sign-OUT, every request on an OAuth client app is verified with the SSO server.

State of the Nation makes modeling object history easy.

Storey aims to simplify the implementation of managing a multi-tenant application.

Sunrise is a Open Source CMS

Provides base fuctionality (models, DSL) for AR synchronization with external resources (apis, services etc)

Description of ThinkFeelDoEngine.

Rails engine client for the Aeolus Image Factory cross-cloud virtual machine image builder.

Set of time, date, weekday related methods.

Manage delta indexes via Sidekiq for Thinking Sphinx

Uploadbox makes easy to manage files in your Rails application.

#Crowdsourcing management system for #RubyOnRails: http://bit.ly/voluntary-0-7-1

Advisory locking support for Postgresql done right.

Kaminari is a Scope & Engine based, clean, powerful, customizable and sophisticated paginator for Rails 3

Integration for zeus and parallel_tests

Simple Rails engine to manage your translations in a db.

Whenever you need assign an association by its attribute, like name, this gem comes to business.

Abstracted has a lot of inspiration from gems like resources_controller by Ian White!

Provides services for the mass-import of complex relational data

A Rails engine gem for deriving discrete data points from narrative text via natural language processing (NLP). The gem includes a user interface to present the abstracted data points for confirmation/revision by curator.