NeuGen is a tool for the efficient generation and description of dendritic and axonal morphology of realistic neurons and neural networks in 3D. The 'in silico' neurons are based on cells of cortical columns in the neocortex. NeuGen can generate hoc files suitable for simulation with NEURON. The NeuGen development team includes Jens P. Eberhard, Alexander Wanner, Simone Eberhard, and Sergei Wolf. For documentation and download, see <a href="http://www.neugen.org/">http://www.neugen.org/</a>