Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Progressive Web Apps (PWAs) are web apps built and enhanced with modern APIs to deliver enhanced capabilities, reliability, and installability while reaching anyone, anywhere, on any device, all with a single codebase.
SoundCloud widget gives you the ability to upload, manage and share tracks.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.