The Modelica systems are a good alternative, but don't really exist in high level languages yet, other than some transpilers which are a little iffy. We are pla

The Modelica systems are a good alternative, but don't really exist in high level languages yet, other than some transpilers which are a little iffy. We are planning to change that with Julia though which has enough of an ecosystem to easily build such an open source tool unlike Python or R.