Blablacar or AirBnB are initiatives that belong to the daily life of the French. The popularity for these new platforms illustrates the succes of these initiatives and to think that "collaborative economie" - to use the concept put forward by many authors - has conquered the heart and mind of the French consumers. Despite the lack of conceptual clarity which is still behind the concept of collaborative economy, the first analyses - from or think thanks - hold many promesses. Fore some people, this economy is a sustainable solution

This course offers a review on existing analyses around this emerging study object that is collaborative economy. It presents the diversity of collaborative practices, tension points of this economy, the observed changes in the consumers' behavior and how large traditional comanies are taking these collaborative logics to renew their affair models and activities.