TuringBox is a platform that makes it easier for social and behavioral scientists to study Artificial Intelligence algorithms. It is a two-sided marketplace. On one side, AI contributors upload existing and novel algorithms to be studied scientifically by others, gaining reputation in their community as a result. They can also upload software that interacts with deployed AI systems that are already on the Internet. On the other side, AI examiners develop and post machine intelligence tasks to evaluate and characterize the behavior of AI algorithms, including novel questions of societal importance.