diff --git a/README.md b/README.md
index be6ce1e..b29bd8e 100644
--- a/README.md
+++ b/README.md
@@ -88,6 +88,11 @@ A curated list of open source projects used in nuclear science and engineering.
 - [OpenFOAM](https://www.openfoam.com/) — Finite volume CFD code
 - [TrioCFD](https://github.com/cea-trust-platform/TrioCFD-code) — A Computational Fluid Dynamics (CFD) code based on the TRUST platform.
 
+### System Dynamics
+
+- [OpenModelica](https://github.com/OpenModelica/OpenModelica/) — Environment for modeling and simulating complex dynamic systems
+- [OpenSD](https://github.com/opensd-dev/opensd) - Finite Volume System Dynamics code 
+
 ## Multiphysics
 
 - [Aurora](https://github.com/aurora-multiphysics/aurora) — OpenMC wrapped as a MOOSE app