Moodle is a widely-used, free, and open-source learning management system (LMS) that enables educators and institutions to create effective online learning sites. It's written in PHP and distributed under the GNU General Public License. Moodle supports a variety of features such as customizable course design, resource sharing, forums, assignments, and grading, making it a versatile tool for blended learning, distance education, and other e-learning projects in schools, universities, and workplaces¹²³⁴.