Thinking Worlds : Rapid Authoring Tool and 3d EngineTool for developing 3D simulations that can be played in a browser. Focused on the design rather than the backend programming; they advertise that you can create a sim in a week.Imported from Diigo#rapid#3d#elearning#simulation·thinkingworlds.com·Feb 2, 2010Thinking Worlds : Rapid Authoring Tool and 3d Engine