This is the org landing page for PathSim. Its an open source system modeling package in the block diagramm paradigm similar to Simulink or Modelica but with some modern features and a fresh take. Its also written in pure Python! Besides the core package, this org will maintain and develop a number of domain specific toolboxes collaboratively.
Visit docs.pathsim.org for the documenation, examples and API reference for the core package, for the graphical user interface visit view.pathsim.org.