...Currently Pony works with SQLite, MySQL, PostgreSQL and Oracle databases.
Pony ORM also include the ER Diagram Editor which is a great tool for prototyping. You can create your ER diagram online at https://editor.ponyorm.com, generate the database schema based on the diagram and start working with the database using declarative queries in seconds.
TrustedPickle is a Python module which lets you create and sign your data files. By using public/private key techniques, this module protects your users from loading malicious data files that others might claim you created. LEGAL FOR EXPORT.