Hernán Morales Durand recently announced a new tool he has developed, which allows developers to review the dependencies between the classes within their applications. His Dependency Browser includes an OmniBrowser interface (as shown above) allowing you to review and edit those dependencies.

Hernán is continuing to work on the tool, and is looking at extending the functionality, and the possibility of displaying the graph of the dependencies using tools such as GraphViz.

Anyone interested in this approach should also be aware of the MudPie and Moose projects.