HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
JivoChat is a live chat solution for websites offering customizable web and mobile chat widgets.
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.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.