Description: Much of the software used today depends on open-source projects. These projects make source code available under licences that allow people to use, study, modify and share it according to the licence terms. Open source has become an important part of software development and also provides valuable learning opportunities for students. One of the most interesting aspects of open source is collaboration. A project may have contributors from different countries and backgrounds. People can report problems, improve documentation, suggest features and submit code. The work is coordinated through version-control systems and project guidelines. For students, this creates a chance to learn from real software. Classroom programs are useful for understanding concepts, but large open-source projects show how code is organised in practice. Students can examine documentation, issue discussions, testing procedures and contribution workflows. Figure 1: Illustrative view related...