The Catalsyt Framework is a refinement on the MVC framework. It provides greater focus on user business workflow rather than application workflow. It's goal is to enable business analysis and developers to work closer.
Bebop is a simple yet powerful Java-based Model-View-Controller (MVC) framework. Unlike other MVC frameworks, Bebop supports both standalone and distributed applications, and a variety of UIs (command-line, Swing, web-based UIs, etc.).