For writers, Game-masters, and any who needs to manage a large amount of disparate data, I have been pointed at a great piece of software for the Mac. (I haven’t investigated if they have Windows version yet.)
The software is VooDoo Pad, and it operates as a self-contained no complicated install wiki. I am not a computer person so I needed software that pretty much just runs without a lot fo set-up from me. I have looked at wiki for quite awhile but never found one that was as easy to use as voodoo pad.
I got tipped off to it by my writer’s support group and I just love it. IT will make a great tool for keeping track of all the data generated in creating the fiction universes that my various novels take place in.