http://www.neuroml.org/
"Model Descriptions for Computational Neuroscience. Computational models based on detailed neuroanatomical and electrophysiological data have been used for many years as an aid for understanding the function of the nervous system. NeuroML is an international, collaborative initiative to develop a language for describing detailed models of neural systems. The aims of the NeuroML initiative are: To create specifications for a language in XML to describe the biophysics, anatomy and network architecture of neuronal systems at multiple scales To facilitate the exchange of complex neuronal models between researchers, allowing for greater transparency and accessibility of models To promote software tools which support NeuroML and support the development of new software and databases To encourage researchers with models within the scope of NeuroML to exchange and publish their models in this format. NeuroML is a free and open community effort developed with input from many contributors. We need your help as the language and tools continue to evolve. ... "