Rigs of Rods is an open source vehicle simulator based on soft-body physics
What makes Rigs of Rods different to most simulators is its unique soft-body physics: vehicles, machines, objects, etc. are simulated in real-time as flexible soft-body objects, giving the simulation an extremely accurate behavior which entirely depends on the physical construction of the vehicles or objects you create.
SkyChart III is a planetarium and telescope control program that shows the sky from any location, past or future, on Earth or beyond.
