Review on PhysicsJS by Gary Shakeone

I like that it's open source with an active community of developers who are willing to help new users learn how things work! There is still some room left in terms of features but they're working hard at adding more options so keep up your support requests if you think something isn't there yet or doesn’t have enough documentation about its use cases (ease learning curve). It has helped me understand better what happens when two objects collide by giving insights into their forces acting upon each other as well as visualizing collisions between them which was not previously possible using CSS animations alone.