Moodle is an open source learning management system (LMS) that allows teachers to create online courses, tests, and lessons. It is free to use, runs on many platforms, and supports over 78 languages. Moodle was created by Martin Dougiamas as part of his PhD research and is now used around the world by teachers and students. It provides forums, chats, calendars and other tools for teachers to manage courses and students to participate in online learning.