Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Cloudbeds is a cloud-based hotel management platform which includes tools for managing reservations, availability, rates, distribution channels, payments, guests, housekeeping, and more.
JouwWeb is an online website builder that allows internet users to create own website.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Open Graph is a protocol that is used to integrate any web page into the social graph.