A portal site for systems biology.

Simpathica is a set of tools capable of simulating and analyzing biological pathways. It consists of a front end and a back end. The front end is a pathway editor which generates a set of Ordinary Differential Equations, which are in turn simulated using Octave. The back end, also known as XSSYS, is a temporal logic analysis tool which can answer queries about the time course behavior of a set of pathways. Developed by NYU Courant Institute of Mathematical Sciences.

http://bioinformatics.nyu.edu/Projects/Simpathica/