D3.js : D3.js is a JavaScript library for manipulating documents based on data. D3 helps you bring data to life using HTML, SVG and CSS. D3’s emphasis on web ...
jsPDF : A library to generate PDFs in client-side JavaScript.
Slate : Slate is a completely customizable framework for building rich text editors.
Slate lets you build rich, intuitive editors like those in Medium, Dropbo...
InstantClick : InstantClick is a JavaScript library that dramatically speeds up your website, making navigation effectively instant in most cases.
Crafty : JavaScript Game Engine, HTML5 Game Engine
Add Clippy or his friends to any website for instant nostalgia.