Is a free, secure, and highly portable UnixLike OperatingSystem available for many platforms, from 64-bit AlphaServers? 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 UserSupported? with complete source. Many applications are easily available. http://www.netbsd.org/
An interesting recent development is the ability to erite kernel modules in LuaLanguage See BsdOs