Autotrack : Automatic and enhanced Google Analytics tracking for common user interactions on the web.
css3-mediaqueries-js : make CSS3 Media Queries work in all browsers (JavaScript library)
Photon : UI toolkit for building desktop apps with Electron.
Band.js : An interface for the Web Audio API that supports rhythms, multiple instruments, repeating sections, and complex time signatures.
jQuery : The Write Less, Do More, JavaScript Library
Rainbow is a code syntax highlighting library written in Javascript.
It was designed to be lightweight (1.4kb), easy to use, and extendable.
It is completely themable via CSS.