1. Ascape agent-based modeling toolkit.
http://ascape.sourceforge.net/
2. Commons Math.
http://commons.apache.org/proper/commons-math/
3. ECJ metaheuristics library.
http://cs.gmu.edu/~eclab/projects/ecj/
4. FLAME multiagent simulation tool.
http://www.flame.ac.uk
5. NetLogo simulation platform.
http://ccl.northwestern.edu/netlogo/