First I used a simple wiki that you could keep on a thumb drive: TiddlyWiki. It was just "OK" for my needs and I didn't really use it for long. Of course part of that might just be I didn't have an active campaign at the time and I couldn't be motivated to set my wiki up. For the longest time I was using Blogger, and for just a simple campaign journal it was perfect. With some difficulty I was able to use hot-links from one page to another, but on more than one occasion those links didn't work. The blog did a great job of making things prettier for "outsiders" to follow the game, but it didn't do as well as I wanted for campaign management.
Since I have a web host and essentially unlimited space online I decided to revisit the idea of a wiki, but really wanted a more traditional wiki setup. MediaWiki ended up being my final choice and I'm quite happy with it. There are several really strong points in favor of using MediaWiki:
- Free & Open Source
- Same software Wikipedia uses (or at least used to)
- Easy installation with my web-host
There was plenty of help for me online and I was able to quickly tweak the settings how I wanted them to be, which is basically only I can make posts & upload files, and anyone can read the wiki.