OpenModelica - OpenModelica – A Free Modelica Environment!
Unity - The multiplatform game creation tools for everyone.
SimulationX - SimulationX is a system simulation solution provided by ESI ITI. The company has been operating for over 25 years. The SimulationX software was introduced in 2015. Read more about SimulationX.
Godot Engine - Feature-packed 2D and 3D open source game engine.
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
Blender - Blender is the open source, cross platform suite of tools for 3D creation.