Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising.
Google Analytics is a free web analytics service that tracks and reports website traffic.
Google Sign-In is a secure authentication system that reduces the burden of login for users, by enabling them to sign in with their Google account.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
LiteSpeed is a high-scalability web server.
MaxMind is a provider of geolocation and online fraud detection tools.
Modernizr is a JavaScript library that detects the features available in a user's browser.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.