At Reevoo, we’ve developed numerous Rails plugins for use in our various Rails applications, a number of which are available under the MIT license.
Beanstalk Messaging
A plugin for managing, polling and communicating with the Beanstalkd messaging queue.
http://svn.reevoo.com/repos/plugins/beanstalk_messaging/
Exception Messaging
This plugin builds upon the Beanstalk Messaging plugin and allows you to forward your application exceptions to a beanstalkd queue for offline processing.
http://svn.reevoo.com/repos/plugins/exception_messaging/
Simple Config
SimpleConfig makes it easy to set up application-wide configuration/settings for each of your development environments, separate to Rails’ own environment files, and provides an object-oriented way of accessing those settings throughout your application.
http://svn.reevoo.com/repos/plugins/simple_config/
Abomination (coming soon)
A simple plugin to assist with AB testing of features.
Timed Action Caching (coming soon)
Extends Rails action caching to support time-based expiry.
http://svn.reevoo.com/repos/plugins/timed_action_caching/
