Simple, portable, pocket sized wiki...

Need a wiki, don't have a server then this is for you! TiddlyWiki is a pocket sized, single HTML file wiki which you can carry around with you on a memory stick. It's really easy to use and has some very good functions considering it is all written in HTML, CSS and JavaScript.
The author of this systems describes it as:

"A TiddlyWiki is like a blog because it's divided up into neat little chunks (tiddlers), but it encourages you to read it by hyperlinking rather than sequentially: if you like, a non-linear blog analogue that binds the individual microcontent items into a cohesive whole. I think that TiddlyWiki represents a novel medium for writing, and will promote its own distinctive Writing Style." (See Wikipedia)