Unity - The multiplatform game creation tools for everyone.
Altair Inspire - Altair Inspire enables design engineers, product designers, and architects to create and investigate structurally efficient concepts quickly and easily.
Godot Engine - Feature-packed 2D and 3D open source game engine.
VectorEngineer - VectorEngineer is a CAD software system that you can use to create technical 3D drawings.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Kasemake - Kasemake is a packaging design software that is developed with industry-standard tools and Processing.