Simulink is described as '® is a block diagram environment for multidomain simulation and Model-Based Design. It supports simulation, automatic code generation, and continuous test and verification of embedded systems' and is an app. There are more than 25 alternatives to Simulink for a variety of platforms, including Windows, Linux, Mac, Web-based and SaaS apps. The best Simulink alternative is Circuit JS, which is both free and Open Source. Other great apps like Simulink are Xcos, SimulIDE, OpenModelica and Ktechlab.
Multi Physical Nexus is a new software that allows the user to create visual diagram and print charts or export data in files. It is already well working, but it is still under developpement and does not include all the simulink features.
StochSD (Stochastic System Dynamics) is a System Dynamics simulation software with focus on stochastics. It is a form of Continuous System Simulation (CSS) that in addition to model and simulate continuous flows between compartments, can handle transitions of discrete entities.
