Step is described as 'It works like this: you place some bodies on the scene, add some forces such as gravity or springs, then click Simulate and Step shows you how your scene will evolve according to the laws of physics. You can change every property of the bodies/forces in your experiment (even' and is an app in the education & reference category. There are 2 alternatives to Step for Mac, Windows and Linux. The best Step alternative is SimPhy, which is free.
Simphy is a simulation software to create 2D and 3D simulations with easy drag and drop options. You can create different types of bodies inside its physics world with different parameters like restitution, friction, velocity etc.
FisicaLab (can be pronounced as PhysicsLab) is an educational application to solve physics problems. Its main objective is let the user to focus in physics concepts, leaving aside the mathematical details (FisicaLab take care of them).
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