Apache is a free and open-source cross-platform web server software.
Buy me a coffee is a service for online content creators that they may use to receive tips and donations to support their work.
Open Graph is a protocol that is used to integrate any web page into the social graph.
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.