DreamRealm is a 3D Renderer for showing off all of the possible graphic techniques that can be done by your graphics hardware, communicating via an API for your graphics hardware to do its magic
2D/3D math-physics engine for making games that shouldn't be shipped for production use and should only be used for physics simulations in debugging environments. Its main purpose is to show the low level details that goes behind making physics simulated environments in games or any software that requires it.