Google APIs are application programming interfaces developed by Google which allow communication with Google Services and their integration to other services.
CloudFlare is a global CDN and DNS provider that can speed up and protect any site online.
PayPal is a American international e-commerce service that enables companies and individuals to send money and to accept payments without revealing any financial details.
Google's hosted library for web fonts. Allows websites to choose and use fonts from a free, wide variety of fonts.