OkuribitoRails is an engine for Rails that aims to manage method call status. And you can identify uncalled methods.

ScheduleFu allows scheduling events with dates and times. It includes both the model and view portions of a calendar. It borrow heavily from acts_as_calendar (http://github.com/dball/acts_as_calendar) and calendar_helper (http://github.com/topfunky/calendar_helper).

Rails engine supporting multiple auth providers per user.

Add social network capabilities to your projects.

A Rails Engine to fill in a select box based on a country_select

Allows to define special attributes for ActiveAdmin panel to make it AJAX loadable and auto-updatable

Allow to track changes of records which done through ActiveAdmin

ActiveAdmin CMS extension

Add pagination info to the response headers, GitHub style.

Apress-Api

Client lib to use attache server

Client lib to use attache server

Brightcontent core

MoIP integration with Catarse crowdfunding platform

Canvas LTI and OAUTH2 mountable engine

A Ruby-on-Rails interface to Datastax Enterprise. Intended for use with the DSE search nodes.

A devise extension for remote user authentication.

EasyAuth

A gem that helps you generate your factory files.

Knowledge Base is a bunch of models for Ruby on Rails that you probably need to build your own