The ns-3 Project

Preferred license: GNU General Public License (GPL)
The goal of our project is to develop an open source network simulator targeted first to research purposes but which will hopefully, in time, be usable to a larger userbase than the network research community.
Actual source code produced by the student participants in Google Summer of Code™ for The ns-3 Project can be found here.
 
Current Projects
by Florian Westphal, mentored by Sam Jansen
by Liu Jian, mentored by Mathieu Lacage
by Hagen Paul Pfeifer, mentored by Dr. George F. Riley