I've just started to work with SdiDesk. Even if you're not up to speed on Wikis, it's not a problem, there's plenty of help available on wiki notation.
The program helps you to manage your time the way you think, by association.
Give it a try if you're a writer who's always getting ideas for future projects when she's right in the middle of current projects, and then forgets where-the-heck she stashed the notes for Brilliant Idea #564. SdiDesk puts you back in control.
To get you started with SdiDesk, there's a helpful screencast.