Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
The Open edX platform is a free and open source course management system.
RequireJS is a JavaScript library and file loader which manages the dependencies between JavaScript files and in modular programming.