Freshmeat page: http://freshmeat.net/projects/acspg/
The ArsDigita Community System ported to PostgreSQL. OpenACS (Open ArsDigita Community System) is an advanced toolkit for building scalable, community- oriented web applications. If you're thinking of building an enterprise-level web application, OpenACS is a solid, proven foundation that will give you a 3-6 month headstart.
This project has the following developers:
Keep up with the latest Advogato features by reading the Advogato status blog.