cdnjs is a free distributed JS library delivery service.
LiteSpeed is a high-scalability web server.
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.
Tailwind is a utility-first CSS framework.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.