The Chandler project, started by Mitch Kapor of Lotus fame, is finally starting to look polished and usable. At the moment, the most polished component is the calendar, which has some beginning ineroperability with the server using CalDav. Previously, there were no screenshots of the application, mostly, I suspect, because it was so ugly. It takes a long time to get the backend for such a data-driven application going and yet more time to get the backend hooked into the front-end. Congrats!