TestPilot

TestPilot is a distributed Continuous Integration service for Ruby applications. We run RSpec, TestUnit, Cucumber, and Selenium in the cloud, with zero configuration. TestPilot was built from the ground up to scale to any size application in a distributed nature which can greatly decrease integration time allowing your developers to do what they do best - write code, and test it. TestPilot is free for open source projects, and small fee for private projects.