TiddlyWiki

There are loads of good Wiki frameworks out there including FlexWiki, JSPWiki, MediaWiki, TikiWiki and so on. However, I thought this one is pretty cool: TiddlyWiki. It's ultra lightweight (just a simple HTML page). It's written in HTML, CSS and JavaScript to run on any modern browser without needing any server side logic. If only someone would come up with a set of names that didn't sound so silly... TiddlyWiki indeed!