1. StarlingThe "Cross-Platform Game Engine", a popular Stage3D framework
2. Away3dAn open source, real-time 3D engine for OpenFL
3. OpenflThe Open Flash Library for creative expression on the web, desktop, mobile and consoles.
4. Box2dBox2D is a popular rigid-body 2D physics engine
7. svgProvides SVG parsing and rendering
10. openfl-pixiSuper fast HTML 5 2D rendering engine that uses webGL with canvas fallback