Stands for "Modular Object-Oriented Dynamic Learning Environment." Moodle is an open source course management system, originally developed by Martin Dougiamas. It is used by thousands of educational institutions around the world to provide an organized interface for e-learning, or learning over the Internet.

Moodle allows educators to create online courses, which students can access as a virtual classroom. A typically Moodle home page will include a list of participants (including the teacher and students) and a calendar with a course schedule and list of assignments. Other Moodle features include online quizzes, forums, where students can post comments and ask questions, glossaries of terms, and links to other Web resources.

Because Moodle is open source, or freely distributed, it can be an attractive alternative to commercial e-learning options.