Interactive mesh creation tool. Discretizer will create geometry and meshes for three dimensional flow simulations (CFD). Geometry import is not a goal: Discretizer will be furiously fast geometry builder(on many common engineering applications at least)
Ruby-Newton is a Ruby wrapper for the NewtonGameDynamics physics engine ( http://newtondynamics.com/ ) It brings object-oriented real-time animated physics simulations to Ruby-enabled applications (e.g. 3D modeling tool with interactive scripting support