OpenModelica is described as «вЂ“ A Free Modelica Environment!» and is an app in the education & reference category. There are more than 25 alternatives to OpenModelica for a variety of platforms, including Windows, Linux, Mac, Online / Web-based and Python. The best alternative is MATLAB. It»s not free, so if you»re looking for a free alternative, you could try Circuit JS or SciPy & Numpy. Other great apps like OpenModelica are Spyder, LTspice, Xcos and Circuit Simulator (CircuitJS1).OpenModelica alternatives are mainly Circuit Simulators but may also be Electronic Design Automation Tools or Programming Languages. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of OpenModelica.