Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.
Google Analytics is a free web analytics service that tracks and reports website traffic.
Modernizr is a JavaScript library that detects the features available in a user's browser.
PHP is a general-purpose scripting language used for web development.
Raphael is a cross-browser JavaScript library that draws Vector graphics for websites.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.