Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Cloudflare Browser Insights is a tool that measures the performance of websites from the perspective of users.
Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.
Modernizr is a JavaScript library that detects the features available in a user's browser.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Shopware is an enterprise-level ecommerce platform.
A modest JavaScript framework for the HTML you already have.