Open edX

Open edX is an open source platform for delivering online courses, tests, and assessments. It provides an easy-to-use interface for creating and delivering educational content, and is designed to help instructors and learners share, collaborate, and learn together. With Open edX, educators can easily create and manage courses, quizzes, and assessments, as well as track student progress and provide feedback. Open edX also supports the development of custom content and activities for learning, and allows for the integration of third-party content and tools.