Apache is a free and open-source cross-platform web server software.
JSDelivr is a free public CDN for open-source projects. It can serve web files directly from the npm registry and GitHub repositories without any configuration.
MathJax is a cross-browser JavaScript library that displays mathematical notation in web browsers, using MathML, LaTeX and ASCIIMathML markup.
Moodle is a free and open-source Learning Management System (LMS) written in PHP and distributed under the GNU General Public License.
RequireJS is a JavaScript library and file loader which manages the dependencies between JavaScript files and in modular programming.
Ubuntu is a free and open-source operating system on Linux for the enterprise server, desktop, cloud, and IoT.