In this announcement about the latest release of GNU Octave, which “remains largely compatible with the widely-used MATLAB” <http://phoronix.com/scan.php?page=news_item&px=GNU-Octave-4.2>, one commenter bemoaned the lack of a serious alternative to MATLAB’s Simulink Toolbox. To which another suggested looking at OpenModelica <https://openmodelica.org/>.