AddThis is a social bookmarking service that can be integrated into a website with the use of a web widget.
ClustrMaps widget is a visitor tracker, designed for general web and blog use.
Drupal is a free and open-source web content management framework.
LiteSpeed is a high-scalability web server.
PHP is a general-purpose scripting language used for web development.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.