Raven
MIA (Raven | http://www.angelfire.com/az/ravenos/) is another attempt at making an
OS for x86 PCs from scratch. The project is still in the bootblock phase and documentation is still at wish-list stage, so I can't report much on the design goals of the
OS; but the more systems around, the better.
Update: the homepage does not exist anymore. Try archive.org!