http://www.netbsd.org/images/NetBSD-smaller.jpg
NetBSD is a free, secure, and highly portable UNIX-like Operating System available for many platforms, from 64-bit Alpha Servers and desktop systems to handheld and embedded devices. Its clean design and advanced features make it excellent in both production and research environments, and it is user-supported with complete source. Many applications are easily available.
The user account "Stephen Falken" was present by default for a long time in the operating system NetBSD, in homage to WarGames.