This document discusses open source product management. It begins by defining open source software as software where the source code is publicly available under an open source license. It then discusses who uses open source including individuals, communities, customers, and corporations. It outlines different business models for open source including pure open source, community open source, subscription models, and multi-license models. Finally, it discusses how to successfully manage an open source project through governance, licensing, usability, communication, and community building.