Grant Skinner developed a new tweening engine which suits his needs the best : it's small, fast and powerful. It was inspired by TweenLite but adds new and useful features:

- AS3 event model (addEventListener...) instead of callbacks
- interrupting tweens
- reversing tweens on the fly
- adding tween parameters on the fly
- synchronised tweening with tweenChilds
- sequencing tweens with nextTween
- time/frame/hibrid timing mode
- class-wide pausing of all tweens
- advanced resource management (no memory leaks)
+ some other nice small features like smart rotate (rotates in shortest direction) and others.

Great work! I will definitely give it a try in my next project (although it's still in Beta phase).

Script Image: