PICO-8 - Lua-based fantasy console for making and playing tiny, computer games and programs.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Form 2 - The most advanced desktop 3d printer ever created
Unreal Engine - Unreal Engine 4 is a suite of integrated tools for game developers to design and build games, simulations, and visualizations.
Photon - The fastest way to build beautiful Electron apps using simple HTML and CSS.
Unity - The multiplatform game creation tools for everyone.