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.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Tencent QQ also known as QQ, is an instant messaging software service and web portal developed by the Chinese tech giant Tencent.
Ubuntu is a free and open-source operating system on Linux for the enterprise server, desktop, cloud, and IoT.