The Event Bus is a single-process publish/subscribe event routing library, with Swing extensions. The EventBus is fully-functional, with very good API documentation and test coverage (80+%). It has been deployed in many production environments, including financial, engineering and scientific applications.
The Event Bus is easy to use and yet very powerful. It requires no setup and the API is small and clear. The EventBus solves many problems, and promotes loose coupling, particularly with Swing applications.