modelica / ModelicaStandardLibrary

Free (standard conforming) library to model mechanical (1D/3D), electrical (analog, digital, machines), magnetic, thermal, fluid, control systems and hierarchical state machines. Also numerical functions and functions for strings, files and streams are included.

pathsim / pathsim

A Python native dynamical system simulation framework in the block diagram paradigm.

zenineasa / Konjugate

A graph-native simulation engine for building composable engineering simulations and digital twins.