howler.js : howler.js is an audio library for the modern web. It defaults to Web Audio API and falls back to HTML5 Audio. This makes working with audio in JavaScr...
Protovis : Protovis composes custom views of data with simple marks such as bars and dots. Unlike low-level graphics libraries that quickly become tedious for vi...
DOMAssistant : The modular lightweight JavaScript library, with CSS selectors, event handling, AJAX and complete Unicode support
Sammy.js : Sammy is a tiny javascript framework built on top of jQuery, It's RESTful Evented Javascript.
Scrollama is a modern & lightweight JavaScript library for scrollytelling using IntersectionObserver in favor of scroll events. The goal of this library is to provide a simple interface for creating scroll-driven interactives
Autoprefixer : PostCSS plugin to parse CSS and add vendor prefixes to CSS rules using values from Can I Use.
Anime.js : Anime.js is a fast, multipurpose and lightweight JavaScript animation library with a simple, yet powerful API.
It works with CSS properties, SVG, DOM ...
Selectivizr : CSS3 pseudo-class and attribute selectors for IE 6-8
Animate.css : Animate.css is a bunch of cool, fun, and cross-browser animations for you to use in your projects.
320 and up : ‘320 and Up’ is a lightweight, easy to use and content first responsive web design boilerplate.
Animate On Scroll Library.
Small library to animate elements on your page as you scroll.