The Sonar team has an instance of Hudson running.  Hudson is a fantastic open source continuous integration server.

Here are some links:

Architecture Rules on Hudson
http://ci.sonar.codehaus.org/job/Architecture rules/

Build Status RSS
http://ci.sonar.codehaus.org/job/Architecture rules/rssAll

Modules
http://ci.sonar.codehaus.org/job/Architecture rules/modules

Sonar is an “Open Source Quality Management Platform”. It provides software analysis using many great open source tools such as Checkstyle, PMD, Maven, and Cobertura to provide a dashboard with granular drill down capabilities from projects, to packages, to classes. Architecture Rules has been added to their public hosted instanced (they call this instance Nemo). I encourage you to check out Architecture Rules on Sonar. Sonar is also continuously building our project and running our tests with Hudson.

While investigating back links to our websites, I discovered an issue in Sonar’s issue tracker where they were discussing finding a tool that could analyze architecture so that they can add additional reporting to Sonar. This issue brought me to the source of the issue. I added my input to that issue. It turns out that they would prefer to utilize a project like ours more than the alternatives because our project is the most active. The alternatives have not been updated in years. Sonar also really wants to add DSM analysis reporting to their product, so they are looking for an architecture analysis tool to handle this.

We are discussing with the Sonar project team how we might fill this role.