Have you ever wanted to create artificial intelligence software (AI) but did not know where to start? Have you wanted to put this AI into a robot? If so Leaf is for you. Leaf is the AI software that starts you with a working AI framework that you add to and customize as you wish. It was put together by the Leaf Project, a group robot development program whose objective is to develop a robot platform that supports experiments with artificial intelligence, vision, voice recognition, navigation, etc.