Google Sign-In is a secure authentication system that reduces the burden of login for users, by enabling them to sign in with their Google account.
GSAP is an animation library that allows you to create animations with JavaScript.
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.
PHP is a general-purpose scripting language used for web development.
SWFObject is an open-source JavaScript library used to embed Adobe Flash content onto web pages.
Varnish is a reverse caching proxy.