Apache is a free and open-source cross-platform web server software.
Lightbox is small javascript library used to overlay images on top of the current page.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Plyr is a simple, lightweight, accessible and customizable HTML5, YouTube and Vimeo media player that supports modern browsers.
SEOmatic facilitates modern SEO best practices & implementation for Craft CMS 3.