diff --git a/README.md b/README.md
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+++ b/README.md
@@ -870,6 +870,7 @@ A curated list of awesome C++ (or C) frameworks, libraries, resources, and shiny
 * [Kratos](https://github.com/KratosMultiphysics/Kratos) - framework for building parallel, multi-disciplinary simulation software, aiming at modularity, extensibility, and high performance. [BSD] [website](http://www.cimne.com/kratos/)
 * [ofxBox2d](https://github.com/vanderlin/ofxBox2d) - openFrameworks wrapper for Box2D. [BSD-like]
 * [PhysX](https://github.com/NVIDIAGameWorks/PhysX-3.4) - An open-source realtime physics engine middleware SDK developed by Nvidia as a part of Nvidia GameWorks software suite. [BSD-3-Clause]
+* [PlayRho](https://github.com/louis-langholtz/PlayRho) - An interactive physics engine & library.  [Zlib]
 * [Project Chrono](https://github.com/projectchrono/chrono) - An open source multi-physics simulation engine. [BSD-3-Clause] [website](https://projectchrono.org/)
 * [Quantum++](https://github.com/vsoftco/qpp) - A modern C++11 quantum computing library. [MIT]
 * [Simbody](https://github.com/simbody/simbody) - High-performance C++ multibody dynamics/physics library for simulating articulated biomechanical and mechanical systems like vehicles, robots, and the human skeleton. [Apache2]