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