Apache is a free and open-source cross-platform web server software.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
Quantcast Measure is an audience insights and analytics tool.
Tumblr is a microblogging and social networking website. The service allows users to post multimedia and other content to a short-form blog.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.