Stefano announced the availability of Apache Agora 1.2 (Java Applet Version) on the Cocoon Developers Mailinglist.
It's also available for download as standalone application and has a nice User's Guide.
It's a really amazing to see this great visualization of community dynamics. If you're participating to some of the Apache Mailinglists (like I do for example on the Cocoon Developers Mailinglist), you'll find yourself and how you are related to others or to the community in common.
You have to check this out, really!