Joomla is a free and open-source content management system for publishing web content.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
SoundCloud widget gives you the ability to upload, manage and share tracks.
UIKit is the framework used for developing iOS applications.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.