When we enter the world of “free and open source software”, most of us will choose one or the other philosophy. This choice is usually made easy by the people that guide us when we enter this world. We are at a point where the philosophies behind free software, which have been heralded by Richard M. Stallman and others, are threatened; as more people make the jump away from proprietary operating systems, less of them know about these philosophies. Fewer people will weigh the decision for themselves.

What is the difference?