Today Linux is a mature, stable and powerful operating system used by millions of people all over the world.. It runs on almost any kind of computer, from watches and tiny handheld devices to massive super-computers. Because it is free and flexible, it is used in poorer countries all over the world by people who might not be able to afford computers otherwise, helping to close the technology gap between richer and poorer societies. By turning Linux into a community effort, Linus shows us that programmers who are willing to share their code can create great software together. Linus helped spark a worldwide revolution in software development.