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.
Kentico CMS is a web content management system for building websites, online stores, intranets, and Web 2.0 community sites.
Lightbox is small javascript library used to overlay images on top of the current page.
ASP.NET is an open-source, server-side web-application framework designed for web development to produce dynamic web pages.
Modernizr is a JavaScript library that detects the features available in a user's browser.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.