Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Foxy’s hosted cart & payment page allow you to sell anything, using your existing website or platform.
Mailchimp is a marketing automation platform and email marketing service.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Typekit is an online service which offers a subscription library of fonts.