what is unique and positive about OpenACS?
- Large, active and open community
- One CORE with easy access to new modules (in contrast to PHP based solutions).
- Sophisticated API for quick development of websites (formbuilder, database and permissions)
- Many packages ready to go (read: Click install and it will download everything for you).
- Prepackaged vertical solutions for specific markets: .LRN, .WRK
- Proven to work reliably in enterprise scale websites.
- Large diversity of uses (E-Commerce, CMS, Intranet, Courseware Management).
- Community centric with a focus on easy interaction between users (RSS, Notifications, Jabber, Forums, Blogging, ETP (Homepages), File-Sharing, Group Calendar).
That's just what jumped my head at the moment. But for things like that it is better to brainstorm with more people in the room.
