Contains sources of a minimal kernel, a new CPU scheduler for Linux, multithreading in Linux, systems software in DOS and collection of good reference material for OS lovers. http://www.angelfire.com/myband/unix/os.htm
Open source operating system, planned to be an OS entirely made by Portuguese people and built mainly as a way of self-learning and research on operating systems development. [Open source] http://lusitanos.sourceforge.net/