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.
Microsoft Ajax Content Delivery Network hosts popular third party JavaScript libraries such as jQuery and enables you to easily add them to your web applications.
ASP.NET is an open-source, server-side web-application framework designed for web development to produce dynamic web pages.
SWFObject is an open-source JavaScript library used to embed Adobe Flash content onto web pages.
Twitter is a 'microblogging' system that allows you to send and receive short posts called tweets.