DoubleClick for Publishers (DFP) is a hosted ad serving platform that streamlines your ad management.
Drupal is a free and open-source web content management framework.
Google Publisher Tag (GPT) is an ad tagging library for Google Ad Manager which is used to dynamically build ad requests.
LiteSpeed is a high-scalability web server.
Open Graph is a protocol that is used to integrate any web page into the social graph.
PHP is a general-purpose scripting language used for web development.