This paper explores open source as a metaphor for e-leaming. It builds the case that e-leaming and open source movement are rooted in the constructivist movement and the constructivist movement is itself rooted in the pragmatism and instrumentalism that pervades John Dewey’s theories of understanding as applied to learning. As a result, it is recommended that the use of open source as metaphor for e-learning be further explored in three areas: instructional practices, instructional platforms, and instructional philosophy.