Workbox : JavaScript Libraries for adding offline support to web apps.
Push by Nickersoft : A compact, cross-browser solution for using the JavaScript Notifications API
tarteaucitron.js : The european cookie law regulates the management of cookies and you should ask your visitors their consent before exposing them to third party service...
howler.js : howler.js is an audio library for the modern web. It defaults to Web Audio API and falls back to HTML5 Audio.
Rickshaw : Rickshaw is a JavaScript toolkit for creating interactive time series graphs.
A simple library for handling keyboard shortcuts in Javascript.