TorqueBox is an Open Source Ruby Application Platform that integrates popular technologies such as Ruby-on-Rails, while extending the footprint of Ruby applications to include support for Job Scheduling, Task Queues, SOAP Handling, and Telecom.
The TorqueBox project develops the open-source, ninja-grade Ruby application platform built upon the research, code and success of the JBoss Rails project.
TorqueBox Server provides compatibility with Ruby frameworks such as Ruby-on-Rails, while also providing additional functionality.
Website: http://torquebox.org/