How can you visualize the developers' contributions in a collaborative project? One way involves drawing timelines adorned with marks indicating each developer's contribution. This is a simple UML sequence diagram, a diagram that allows you to see the interactions of objects, but in this case the objects are the actual developers and the interactions are their contributions.

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Over the summer two articles presented UMLGraph to the masses. Paul Duvall wrote on IBM developerWorks an article titled Automation for the people: Pushbutton documentation, and Meera Subbarao published on DZone Javalobby another piece on how to reverse-engineer source code into UML diagrams. In addition, I received a number of interesting patches and contributions. As a result I decided it was time to release UMLGraph version 5.1.

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Today I released version 5.0 of UMLGraph. This release contains a couple of important changes: six new shapes (components, nodes, collaborations, use cases, notes, and active classes), a facility for adding notes, and the hosting and packaging under its own domain name umlgraph.org.

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I needed a UML class diagram of the classes I use in the implementation of CScout refactoring browser. I drew the last such diagram on paper about four years ago, so it was definitely out of date. I always say that whenever possible documentation should be automatically generated from the code, so I decided to automate the task.

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I have updated the UMLGraph program to run under Java 1.5.

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