diff --git a/README.md b/README.md
index 81ad4598..7c4e8a66 100644
--- a/README.md
+++ b/README.md
@@ -931,6 +931,7 @@ _Libraries for scientific computing. Also see [Python-for-Scientists](https://gi
 - [statsmodels](https://github.com/statsmodels/statsmodels) - Statistical modeling and econometrics in Python.
 - [SymPy](https://github.com/sympy/sympy) - A Python library for symbolic mathematics.
 - [Zipline](https://github.com/quantopian/zipline) - A Pythonic algorithmic trading library.
+- [PathSim](https://github.com/pathsim/pathsim) - A block-based system modeling and simulation framework with a browser-based visual editor.
 
 ## Search