What is meant by “open source?” What is meant by “commercial open source?” How do these differ from “proprietary” products? How do other forms of intellectual capital share in the open-source paradigm? Our panelists will discuss these questions, the advantages and disadvantages of the open-source and proprietary business models, how they compete and how they cooperate, and related topics, all in the context of actuarial software and thought development. Examples of products available in today’s market will be used to highlight the different value propositions.