Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Donorbox is a US-based technology company. It offers an online fundraising software that allows individuals and nonprofit organisations to receive donations over the Internet.
Ghost is a powerful app for new-media creators to publish, share, and grow a business around their content.
Google Analytics is a free web analytics service that tracks and reports website traffic.
Gravatar is a service for providing globally unique avatars.
JSDelivr is a free public CDN for open-source projects. It can serve web files directly from the npm registry and GitHub repositories without any configuration.
Open Graph is a protocol that is used to integrate any web page into the social graph.
OpenResty is a web platform based on nginx which can run Lua scripts using its LuaJIT engine.
Stripe offers online payment processing for internet businesses as well as fraud prevention, invoicing and subscription management.
Varnish is a reverse caching proxy.