For anyone who has read Dreaming in Code and has wondered what happened to the Chandler project, they just released 1.0. This release is 7 years+ in the making.
Chandler is basically a personal organizer improving on Outlook, et al. You should check it out.
The book is an account of the beginnings of this open source project. Perhaps the best thing I got out of it is learning from the mistakes of others. Otherwise the book is a reflection of how lost the project seemed to be the first few years.