jSLplus: Joomla SL mashup community builder
jSLplus is community-software that offers a mashup between the new Joomla 1.5 framework, and Secondlife scripted objects. Its goal is to offer a rich communication environment, where secondlife-users can authenticate, register, send messages, send objects, blogs, postcards, etc. to the website's interface. From the Joomla perspective, a user will get a much better insight on a secondlife community, by bundling information into profiles, events, items (object distribution system), simulators (allow basic communication between linden lab's grid, and opensim), etc.
The current status is pre-alpha, but afirst alpha-release is coming soon now. It's been developed by Jeroen van Veen, but could use some extra hands.
Read more on the Joomla SL project.