We've released code! Its not of much use in and of itself, but it could be useful for developers at the moment, and we'll have more usable systems soon. We're also recruiting - we've got one job up at the moment, for a web designer, but we'd also be interested in hearing from developers. If you want to lend a hand, e-mail me, my address is in the docs.
You can download the source code, and .war files from our project homepage at http://sourceforge.net/projects/tags.
The TAGS project covers three different systems:
Unless you're a university, the system as is, is unlikely to be very useful. However, it does make a good example of how to write a large scale web application, and provides a reasonably flexible framework for applications.