Hypertext Markup Language (HTML) is the standard markup language for documents designed to be displayed in a web browser. It can be assisted by technologies such as Cascading Style Sheets (CSS) and scripting languages such as JavaScript.
Moodle is an open-source learning platform that offers educational services to its users.It's range of solutions include consulting, hosting, support, themes, and training. It uses open-source learning management systems to offer educational services to its users.
YouTube is a video sharing service where users can watch, like, share, comment and upload their own videos. The video service can be accessed on PCs, laptops, tablets and via mobile phones.