Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Odoo is business management software which includes CRM, ecommerce, billing, accounting, manufacturing, warehouse, project management, and inventory management.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Trusted Shops is a company that acts as a 3'rd party representing the common interests of both consumers and retailers.
Ubuntu is a free and open-source operating system on Linux for the enterprise server, desktop, cloud, and IoT.