The three main types of software products are:
1 - System software: This is software that provides the foundation for running other software applications, including operating systems, device drivers, and utility software.
2 - Application software: This is software that is designed to perform specific tasks or functions, such as word processing, accounting, or video editing.
3 - Middleware software: This is software that serves as a bridge between different software applications, enabling them to communicate and work together, such as web servers, application servers, and database management systems.