<A HREF="http://www.atheos.cx/"
  >AtheOS</A> is a heavily multithreaded *(OS), written from scratch, that supports SMP, TCP/IP, a fast _(GUI), and most of the useful _(POSIX) functionality. It is released under the GPL. The project has been running for some years and has reached <strong>impressive</strong> functionality: a working system, and easy recompilation of most _(Unix) programs with ./configure; make. While traditional in design, this system has been designed for the desktop, unlike traditional posixish OSes, and deserves attention.
