http://people.wm.edu/~cadeln/neuronetExperimenter.htm
"The NeuronetExperimenter software can be used to quickly simulate large sets of biological neurons arranged with arbitrary network connectivity. The software makes it easy to investigate the behaviors of large, complex, neural networks, especially when starting from XPPAUT models. The software is very flexible and allows users to develop multiple neuron types with different constituent differential equations describing their behavior. Any of these neuron types can be included in a network together where each neuron has its own unique set of parameters that can be changed during the course of the simulation. The software also includes extensive analysis features useful for studying the behaviors of large networks."