Reapp : An easier, faster way to build apps with React and JavaScript. Built from the ground up to target multiple platforms. Customize every piece of it from...
Dropzone.js : DropzoneJS is an open source library that provides drag'n'drop file uploads with image previews.
Headroom.js : Headroom.js is a lightweight, high-performance JS widget (with no dependencies!) that allows you to react to the user's scroll.
Tracery : A story-grammar generation library for javascript. Write grammar objects, get generative stories.
polyfill : polyfill makes web development less frustrating by selectively polyfilling just what the browser needs. Use it on your own site, or as a service.
A super micro tiny DOM library for authoring HTML5 mobile web applications.