Hudson is an open source continuous integration tool originally developed by Sun Microsystems.

Using Hudson, you can schedule your software builds, tests, tasks and keep your team aware of the integration problems found in their code. Hudson is an easy to use and easy to configure tool. Because of that, it quickly became one of the most used continuous integration tools in the market.

Links:

Hudson

Tools:

Hudson Monitor for Chumby

Articles:

How to create an Extreme Feedback device to monitor your Hudson builds (In Portuguese)

FAQ:

How to can I pass the my GIT user and password to Hudson?