Acknowledgments Introduction Chris dibona,Sam Ockman,and Mark Stone A Brief History of Hackerdom Eric S.Raymond Twenty Years of Berkeley Unix:From AT&T-Owned to Freely Redistributale Marshall Kirk McKusick The Internet Engineering Task Force Scott Bradner The GNU Operating System and the Free Software Movement Richard Stallman Future of Cygnus Solutions:An Entrepreneur's Account Michael Tiemann Software Engineering Paul Vixie The Linux Edge Linus Torvalds Giving It Away:How Red Hat Software Stumbled Across a New Economic Model and Helped Improve an Industry Robert Young Diligence,Patience,and Humility Larry Wall Open Soure Definition Bruce Perens Hardware,Software,and Infoware Tim O'Reilly Freeing the Source:The Stroy of Mozilla Jim Hamerly and Tom Paquin with Susan Walton The Revenge of the Hackers Eric S.Raymond Appendix A:The Tanenbaum-Torvalds Debate Appendix B:The Open Source Definition,Version 1.0 Contibutors