StochSS: Stochastic Simulation Service, is an integrated development environment for modeling and simulation of discrete stochastic biochemical systems.  An easy to use GUI enables researchers to quickly develop and simulate biological models on a desktop or laptop, which can then be expanded or combined to incorporate increasing levels of complexity.  As the demand for computational power increases, StochSS is able to seamlessly scale up by deploying cloud computing resources.  The software currently supports simulation of ODE and well-mixed discrete stochastic models, parameter estimation of discrete stochastic models, and simulation of spatial stochastic models.  

New capabilities of Version 1.8 include:
- Parameter Sweep tool facilitates 1D/2D parameter sweeps for all models
- Integration of Jupyter Notebooks on job result pages for post-processing analysis
- Status page updates for filtering and automatic forwarding of running->finished jobs    

For more details and instructions on how to obtain the code, visit us at www.StochSS.org. 

Linda Petzold and Chandra Krintz University of California Santa Barbara 
Per Lötstedt and Andreas Hellander Uppsala University