Apache is a free and open-source cross-platform web server software.
Craft CMS is a content management system for building bespoke websites.
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.
SEOmatic facilitates modern SEO best practices & implementation for Craft CMS 3.
Ubuntu is a free and open-source operating system on Linux for the enterprise server, desktop, cloud, and IoT.