EMSO simulator is described as 'Equation-oriented process simulator with a graphical interface for modeling complex dynamic or steady-state processes. It is CAPE-OPEN compliant. EMSO stands for Environment for Modeling, Simulation, and Optimization' and is an app. There are more than 10 alternatives to EMSO simulator for a variety of platforms, including Windows, Mac, Linux, Web-based and Python apps. The best EMSO simulator alternative is Simulink. It's not free, so if you're looking for a free alternative, you could try Xcos or OpenModelica. Other great apps like EMSO simulator are PyDSTool, Minsky, BMS and VisSim.