Skrollr
Stand-alone parallax scrolling library for mobile (Android + iOS) and desktop. No jQuery. Just plain JavaScript (and some love).
Real Shadow
Module that casts photorealistic shadows
Alice
AliceJS - (A Lightweight Independent CSS Engine) is a micro JavaScript library. For a demo, click the link below.
Slidr
add some slide effects.
Vivus
JavaScript library to make drawing animation on SVG
Animate.css
Cross-browser CSS3 animations. Plug and play. Do a little dance.
Balloon.css
Simple tooltips made of pure CSS
Scroll Reveal.js
Declarative on-scroll reveal animations.
Anijs
Declarative handling library for CSS animations.
Effeckt.css
A Performant Transitions and Animations Library:
Anime
Javascript Animation Engine
Motio
Small JavaScript library for sprite based animations and panning.
Flippant.js
A mini dependancy-less UI lib for flipping over DOM nodes.
TweenJs
A simple but powerful tweening / animation library for Javascript. Part of the CreateJS suite of libraries.
Sly
JavaScript library for one-directional scrolling with item based navigation support.
Bounce.js
Create beautiful CSS3 powered animations in no time.
Elevator.js
Finally, a "back to top" button that behaves like a real elevator.