At my last job at the Kettering Foundation, Unchat gave a presentation. This was several years ago, and I'm not sure about the status of this software. Regardless, I thought I would post a link to it as it is related to our Friday discussion on Civic Applications. I found a few organizations using it including MIT. Ben Barber and Beth Noveck were the brains behind this project.
Unchat hopes to provide a chat software program that encourages deliberation. From their web site: "Put to use in civic and political debates, learning and educational development, community building and non-profit communications, corporate meetings and knowledge management, our software will enhance discussion, nurture deliberation and facilitate the arbitration of differences and the quest for common ground."