Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
OpenResty is a web platform based on nginx which can run Lua scripts using its LuaJIT engine.
Pure CSS is a set of small, responsive CSS modules that can be used in web projects.
Progressive Web Apps (PWAs) are web apps built and enhanced with modern APIs to deliver enhanced capabilities, reliability, and installability while reaching anyone, anywhere, on any device, all with a single codebase.