This course is designed for senior undergraduate students majoring in software engineering and computer science and technology. The main objectives of this course are: introduction to the history and current status, the basic ideas and concepts, development methods and key technologies, supporting tools and platform, and related research of open source software; course project practice based on Internet open source software platforms; enabling students to master the theoretical knowledge and practical skills for open source software development; prepare the students for future research and engineering work in this field.