Apache is a free and open-source cross-platform web server software.
Debian is a Linux software which is a free open-source software.
Google PageSpeed is a family of tools designed to help websites performance optimisations.
Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Outbrain is a web advertising platform that displays boxes of links, known as chumboxes, to pages within websites.
PHP is a general-purpose scripting language used for web development.