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...
Sammy.js : Sammy is a tiny javascript framework built on top of jQuery, It's RESTful Evented Javascript.
Workbox : JavaScript Libraries for adding offline support to web apps.
Photon : UI toolkit for building desktop apps with Electron.
A simple library for handling keyboard shortcuts in Javascript.