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.
OWL Carousel is an enabled jQuery plugin that lets you create responsive carousel sliders.
Tencent QQ also known as QQ, is an instant messaging software service and web portal developed by the Chinese tech giant Tencent.
Reveal CSS animation as you scroll down a page.