Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Ecwid is a shopping cart plugin that turns any existing website into an online store.
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.
ASP.NET is an open-source, server-side web-application framework designed for web development to produce dynamic web pages.
Open Graph is a protocol that is used to integrate any web page into the social graph.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.