Godot Engine - Feature-packed 2D and 3D open source game engine.
Facebook Gaming - Watch and stream live games on Facebook
Unreal Engine - Unreal Engine 4 is a suite of integrated tools for game developers to design and build games, simulations, and visualizations.
Creative Class - Teaching freelancers how to make their business work.
BYOND - BYOND is the premier community for making and playing online multiplayer games.
Shipstreams - A list of makers shipping live