Is a free and open source virtual workspace browser and construction toolkit for accessing, creating, and publishing hyperlinked multi-user virtual environments.
http://cobaltworlds.com/index.php
See a demostration of Dr. Xunlei Wu testing Open Cobalt on a multitouch interactive wall at : http://www.duke.edu/~julian/Cobalt/Home.html
Cobalt - Edusim is a 3D multi-user virtual world platform and authoring toolkit intended for your classroom interactive whiteboard (but equally powerful on the students laptop or desktop computers !). Cobalt - Edusim has been tested and works on the Smartboard, Activeboard, Interwriter, Polyvision, Mimio, eBeam, and even the Wiimote Whiteboard. http://edusim3d.com/
