I m sure you not forget the previous version “Scrollorama“, the popular jQuery plugin creating scrolling effects in scrolling of web pages.
There is now a superior version named SuperScrollorama by the same developer which offers more and complicated animations.
It makes use of the feature-rich TweenMax and the Greensock Tweening Engine (make sure you check its license before using) for accomplishing the effects.
Similar to an animation app, it allows us to add tweens and timelines to it, targeting when an element appears in the viewport or at a specific scroll point.
The website of the resource shows its flexibility and there is a short-yet-enough documentation provided.