copasi: copasi (tool for modeling and simulation of biochemical networks) copasi: copasi: COPASI is a stand-alone program that simulates models of biochemical copasi: networks using ODE solvers or Gillespie's stochastic simulation copasi: algorithm. COPASI is compatible with models in SBML format. It also copasi: performs several analyses: stability, parameter sensitivity, copasi: elementary modes, Lyapunov exponents, optimization, and parameter copasi: estimation. Data can be visualized in plots, histograms and animations copasi: of network diagrams. Both GUI and a command line version are included. copasi: copasi: Homepage: http://www.copasi.org/