ASP.NET is an open-source, server-side web-application framework designed for web development to produce dynamic web pages.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Pure CSS is a set of small, responsive CSS modules that can be used in web projects.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.