2D layers in AE become rigid bodies in Newton.
Supports masks, text and shape layers.
Handles collision, friction, bounciness, gravity and more.
6 types of body (static, dynamic, kinematic, AEmatic, dormant and dead).
4 types of joints (distance, pivot, piston and spring) that allow you to connect bodies with specific constraints.
Provides clean, efficient and easy to use interface.
Fast preview, fast export to keyframes.
Comprehensive user’s guide with illustrative animations for almost every property.
Web Site: http://www.motionboutique.com/newton/