The aim of the Casetta project is to provide a collection of software to open, edit, convert, and transfer data with a Casio graphical calculator. For the moment, it provides three programs. Casetta is a Python module to make conversions between various Casio data formats, transfers with a Casio calculator, and let any Python program manage data such as programs, backups, etc. Casetta_cli is a command line interface for Casetta to make massive format conversions, or just to use a powerful interface. Gasetta is a graphical interface for file conversion, transfers, and to manage and edit your data.