Jam.py is an event-driven framework for developing web database applications. The Server side uses Python and werkzeug library, the client side - JavaScript, JQuery and Bootstrap. The don't repeat yourself (DRY) principle underlying the framework allows a developer to focus on programming business logic and not waste time on a routine work of programming interface and server details. That allows to create feature rich, complex and robust applications. Thanks for checking it out. There is a demo project in the "demo" directory.