A comprehensive list of self-study and exam apps

Currently, my country's education system is extremely comprehensive. In particular, it allows individuals who are unable to continue their studies or have been away from school for a long time due to various circumstances to obtain diplomas from designated universities and majors through a completely self-reliant and diligent study and exam preparation model. This also requires a long-term learning plan, which covers most of the learning and exam data, enabling them to handle various situations with ease.