Between.js
Lightweight JavaScript (ES6) tweening engine
Magic
CSS3 Animations with special effects
Loaderz
:zap: A very easy-to-use, blazing fast asset-loader using promises. Support older-browsers and preload images, audios and videos.
Apricot
A simple Hpricot Clone for nodejs.
Svg Morpheus
JavaScript library enabling SVG icons to morph from one to the other. It implements Material Design's Delightful Details transitions.
Gfx
CSS3 3D animation library
Skrollr Decks
skrollr plugin for fullpage presentation decks
Zoomooz
An easy-to-use jQuery plugin for making zooming web pages.
Hover
A collection of CSS3 powered hover effects to be applied to links, buttons, logos, SVG, featured images and so on. Easily apply to your own elements, modify or just use for inspiration. Available in CSS, Sass, and LESS.
Real Shadow
Module that casts photorealistic shadows
Green Sock Js
Public repository for GreenSock's JavaScript libraries like GSAP. See http://www.greensock.com
Balloon.css
Simple tooltips made of pure CSS
Engaged
Animated Social Menu Framework with magic
Skrollr
Stand-alone parallax scrolling library for mobile (Android + iOS) and desktop. No jQuery. Just plain JavaScript (and some love).
Ant Motion
:bicyclist: Animate specification and components of Ant Design
Pace
Automatically add a progress bar to your site. #hubspot-open-source
Jquery Transit
Super-smooth CSS3 transformations and transitions for jQuery