For complex character animation with serious tooling and Starling integration, look no further. You want DragonBones.
Thibault Imbert | Group Product Manager | Adobe
Fully Integrate with Flash Pro and Starling
DragonBones contains a Flash Pro based design panel and an AS3 based library. The design panel converts Flash vector animation to texture atlas and the library call starling to GPU accelerated render the animation. With the benifit, animation creation related task can be fully handled by designers, and developers focus on the logic.
Free & Open Source (MIT License)
DrangonBones does not cost a dime. Download and use it right away — no strings attached. And because it is Open Source, you're always in control: step through the code and learn from its internals.
Instead of having giant "sprite sheets" for sequence frame based animation, the skeleton animation powered by Dragonbones can help you save lots of resource and memory consumption and boost the peformance!