JavaScript libraries
Touch enabled jQuery plugin that lets you create beautiful responsive carousel slider

JavaScript libraries
jQuery The Write Less Do More JavaScript Library

Tag managers
Google Tag Manager helps make website tag management simple with tools solutions that allow small businesses to deploy and edit tags all in one place

Authentication
Documentation for developers on how to log users into your app or website with Facebook Login

CDN
Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services