Freshmeat page: http://freshmeat.net/appindex/1998/05/23/895916393.html
INN is the Internet News Server. There are others out there but INN definitely has the broadest userbase and an unbeaten repository of add-ons and modifications. INN is actively maintained and under supervision of the Internet Software Consortium.
License: OpenSource (restricted)
This project has the following developers:
New HTML Parser: The long-awaited libxml2 based HTML parser code is live. It needs further work but already handles most markup better than the original parser.
Keep up with the latest Advogato features by reading the Advogato status blog.
If you're a C programmer with some spare time, take a look at the mod_virgule project page and help us with one of the tasks on the ToDo list!