GillespieSSA provides a simple to use, intuitive, and extensible interface
to several stochastic simulation algorithms for generating simulated
trajectories of finite population continuous-time model. Currently it
implements Gillespie's exact stochastic simulation algorithm (Direct
method) and several approximate methods (Explicit tau-leap, Binomial
tau-leap, and Optimized tau-leap). The package also contains a library of
template models that can be run as demo models and can easily be
customized and extended. Currently the following models are included,
decaying-dimerization reaction set, linear chain system, logistic growth
model, Lotka predator-prey model, Rosenzweig-MacArthur predator-prey
model, Kermack-McKendrick SIR model, and a metapopulation SIRS
model.}