Virtual NetManager WAS a GTK frontend for VDE and QEMU. This project has been recently merged with Qemulator, and became Check the home page for the new project!!
VDE2 OpenMoko Tunnel is a Python/GTK visual interface created for OpenMoko Freerunner. It is intended to build virtual ethernet tunnels to remote VDE switches.
This program is released under the GPL v2 as part of the Virtualsquare project.