Payment processors
Easily and securely shop from millions of brands across the world with confidence PayPal has got you covered

Widgets
Pinterest is an image sharing and social media service designed to enable saving and discovery of information

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

Analytics
VK is a Russian online social media and social networking service