cdnjs is a free distributed JS library delivery service.
Glide.js is a dependency-free JavaScript ES6 slider and carousel.
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.
PHP is a general-purpose scripting language used for web development.
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.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.
Silverstripe CMS is a free and open source Content Management System and Framework for creating and maintaining websites and web applications.
Typekit is an online service which offers a subscription library of fonts.