Well the nice thing, maybe, about Plan 9's virtualization of resources is that they all follow some 9P variant (simple protocol). 9p is v9fs in linux. There's

Well the nice thing, maybe, about Plan 9's virtualization of resources is that they all follow some 9P variant (simple protocol). 9p is v9fs in linux. There's FUSE 9p stuff for other platforms. There's a virtualized Erlang runtime that sits directly on Xen as the OS that uses 9p. 9p is part of QEMU's way of talking to the guest (or is it the host?) OS. It's been on a lego mindstorm brick too. To me, kernel dbus is a bit more like mach_ports. Those have their own advantages too. As did Solaris Doors.