How Aldebaran Robotics is using open source on their NAO robot. The talk starts with a generic introduction to Aldebaran and its flagship product, the humanoid robot NAO. We then give a small demo of what the robot can do, and how you can program it, all with open source software. Then we talk a little about the history of open source at Aldebaran: how it was first chosen as a tool; the decision to use linux; the way we went from openembedded to buildbot and gentoo; the way we went from CDash to Jenkins, and so on. After this, we will discuss the current open source projects Aldebaran is contributing to (connman for instance) and the tools Aldebaran decided to open source (like qiBuild).