Hmmm, my bad, there are no open source components in TestPlant / EggPlant. It has a freely distributed VNC server and client for the Mac. It is still a pretty innovative tool for testing though. Looks like they added some even more innovative load/performance test-generating capabilities since I looked at it last...
I am more looking for shell scripts to make sure all the steps to checkout the latest version and push changes to a production server in a reliable way, right now.