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.
Shopify is a subscription-based software that allows anyone to set up an online store and sell their products. Shopify store owners can also sell in physical locations using Shopify POS, a point-of-sale app and accompanying hardware.
Tumblr is a microblogging and social networking website. The service allows users to post multimedia and other content to a short-form blog.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.