Apache is a free and open-source cross-platform web server software.
cdnjs is a free distributed JS library delivery service.
RequireJS is a JavaScript library and file loader which manages the dependencies between JavaScript files and in modular programming.
Spotify Widgets provide an embeddable view of a track, artist, album, user, playlist, podcast or episode for use within your web project.
Unix is a family of multitasking, multiuser computer operating systems.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.