I have referred to this before. It is advertised as a notepad on crack. The application is not as bad as the description, but neither is it as good as some other personal or desktop wikis, which are available for Windows.
Do I need to say that Zulupad is a pale imitation of Voodoopad, a Mac application?
The advertisement says "Zulupad is now available in two flavors: The original ZuluPad is opensource under the GPL, and ZuluPad Pro can be purchased for $15." I am not sure whether this means that the one contains less crack because I don't know whether crack has any flavor.
Still, I would stay away from it, no matter what its flavor may be.
No further comment!