jQuery CDN is a way to include jQuery in your website without actually downloading and keeping it your website's folder.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Simple parallax scrolling effect.
RequireJS is a JavaScript library and file loader which manages the dependencies between JavaScript files and in modular programming.
Typekit is an online service which offers a subscription library of fonts.