Flickity is a JavaScript slider library, built by David DeSandro of Metafizzy fame.
LiteSpeed is a high-scalability web server.
PHP is a general-purpose scripting language used for web development.
Unpkg is a content delivery network for everything on npm.
WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. Features include a plugin architecture and a template system.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.