Do you do animation using ActionScript? Then you need what is most commonly referred to as just Fuse. Fuse is simply the best option for scripted animation.
There are many tweening engines for Flash, but none has the features of Fuse. Fuse is a set of classes that you install just by downloading and opening a MXP file. These classes contains all the movieclip tweening methods you need, but Fuse let's you tween more than just the X and Y position. Using Fuse, you can tween colors using properties such as brightness, brightOffset, invertColor, tint and tintPercent. You can tween filters, alphas, bitmaps - just about any property and then make a chain of events (sequence) that plays back your tweens over time.
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