Apache is a free and open-source cross-platform web server software.
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.
Helix Ultimate a free template framework for Joomla.
Joomla is a free and open-source content management system for publishing web content.
Open Graph is a protocol that is used to integrate any web page into the social graph.