Susan Egan as Narrator

Linus Torvalds as Himself - Creator, Linux Kernel

Richard M. Stallman as Himself - Founder, GNU Project

Eric S. Raymond as Himself - Author

Bruce Perens as Himself - Author, Open Source Definition

Larry Augustin as Himself - Co-Founder, CEO, VA Linux Systems

Michael Tiemann as Himself - Co-Founder, Cygnus Solutions

Brian Behlendorf as Himself

Frank Hecker as Himself - Former Netscape Systems Engineer

Chris DiBona as Himself

Nick Moffitt as Himself

Rob Malda as Himself

Donnie Barnes as Himself - Employee, Red Hat Software

Marc Merlin as Himself

Terry Egan as Himself

Lisa Corsetti as Herself

David Ljung as Himself

José Medeiros as Himself

Russ Emerson as Himself

Patrick Devine as Himself