Apache is a free and open-source cross-platform web server software.
Divi is a WordPress Theme and standalone WordPress plugin from Elegant themes that allows users to build websites using the visual drag-and-drop Divi page builder.
NitroPack creates optimised HTML cache for fast page loading experience.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.