AnyLogic - AnyLogic has changed simulation modeling and expanded its application into complex business environments. The unmatched flexibility of multimethod modeling allows users to capture the complexity of virtually any system, at any level of detail.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
FlexSim - Simulation software to model, simulate, predict, and visualize systems in manufacturing, material handling, healthcare, warehousing, mining, etc.
FreeCAD - An open-source parametric 3D modeler
Simio - Facility design simulation & production scheduling
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming