MUIbase is a relational, programmable database with graphical user interface for Windows, Mac, Linux and Amiga. MUIbase is a fast and flexible database system. It is targeted for advanced desktop users who want to manage data in a comfortable and powerful way. MUIbase is able to manage any kind of data, e.g. addresses, CD series, movies, photo collections, your family tree, your income and expense, and much more. The power of MUIbase lies in its clear and powerful graphical user interface and its programming capabilities. Programming MUIbase allows you to process data in various ways, e.g. automatic calculations upon user input, generation of reports, import and export of data, etc. For example MUIbase can be used for calculating the total amount of income, or the total amount of recorded time on a CD, or to automatically create and print serial letters to your customers.