Apache is a free and open-source cross-platform web server software.
Drupal is a free and open-source web content management framework.
Google Analytics is a free web analytics service that tracks and reports website traffic.
Marketo Forms help create web forms without programming knowledge. Forms can reside on Marketo landing pages and also be embedded on any page of website.
Open Graph is a protocol that is used to integrate any web page into the social graph.