Swarm Development Group - An organization dedicated to development of the multi-agent based Swarm simulation system and support to its users. VMD - Visual Molecular Dynamics - Molecular graphics software for Windows and Unix from the Theoretical Biophysics Group, Illinois, USA. Visualization of Complex Dynamical Systems - Poincaré maps, stream arrows, DynSys3D, econometric models, higher dimensional dynamical systems, texture based flow. Vensim Simulation Software - Dynamic feedback models for Windows. Purchase online. ISEE Systems - Producers of two simulation products: STELLA and iThink. Website contains information and demos of the products. Powersim Software - A family of dynamic simulation programs for Windows. Website contains overview of product line. Insight Maker - A free dynamic modeling and simulation web application.