To add to the list, the best physics engine I've seen (not for js games, for actual physics simulations to teach people physics) is this one: https://www.myphys

To add to the list, the best physics engine I've seen (not for js games, for actual physics simulations to teach people physics) is this one: https://www.myphysicslab.com/ https://www.myphysicslab.com/ PheT also has lots of good stuff: https://phet.colorado.edu/ https://phet.colorado.edu/