Apache is a free and open-source cross-platform web server software.
Bootstrap is a free and open-source CSS framework directed at responsive, mobile-first front-end web development. It contains CSS and JavaScript-based design templates for typography, forms, buttons, navigation, and other interface components.
Craft CMS is a content management system for building bespoke websites.
Instant.Page is a JavaScript library which uses just-in-time preloading technique to make websites faster.
Open Graph is a protocol that is used to integrate any web page into the social graph.