When we first started bearing down on Drupal two years ago, about the first thing we wanted to do manage independent projects on our own www.dbdes.com site. We got reasonably far, with the ability to define clients, projects, tasks and organize blog-like discussion and documents for each.  

These days, having an “Intranet” comes up a lot as a requirement for website projects. I’m using the term advisedly to refer to a range of needs for private space for organizing campaigns and collaboratively developing ideas.