meSpeak.js : meSpeak.js (modulary enhanced speak.js) is a 100% client-side JavaScript text-to-speech library
Workbox : JavaScript Libraries for adding offline support to web apps.
RequireJS : RequireJS is a JavaScript file and module loader. It is optimized for in-browser use, but it can be used in other JavaScript environments, like Rhino ...
jsPDF : A library to generate PDFs in client-side JavaScript.
swfobject : SWFObject 2 offers two optimized Flash Player embed methods; a markup based approach and a method that relies on JavaScript & offers a JavaScript API ...
Namespace.js is a small javascript script which provide namespacing utilities. It is framework independent. It also allows you to remotely include files.