Apache is a free and open-source cross-platform web server software.
cdnjs is a free distributed JS library delivery service.
Open Graph is a protocol that is used to integrate any web page into the social graph.
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.
Simple Analytics is a privacy-friendly Google Analytics alternative.
Unix is a family of multitasking, multiuser computer operating systems.
Unpkg is a content delivery network for everything on npm.