Oops, I wanted to say "If you wish to try an early demo of stackvm in a few months, visit stackvm.com to sign up." :)
But you can try to get it running on your own. If you pull my current 'chat' stackvm branch [1], it's the one we used in the 2nd demo. You'd need qemu, node.js and a few node.js libraries.
[1] http://github.com/pkrumins/stackvm/commit/162bca6eba35db815f...