"TiddlyWiki is a single html file which has all the characteristics of a wiki - including all of the content, the functionality (including editing, saving, tagging and searching) and the style sheet. Because it's a single file, it's very portable - you can email it, put it on a web server or share it via a USB stick."
That sounds pretty good especially as its one file.
TiddlyWiki is already being used as:
- A personal notebook
- A GTD ("Getting Things Done") productivity tool
- A collaboration tool
- For building websites (this site is a TiddlyWiki file!)
- For rapid prototyping"
It looks like Tiddlywiki is used quite extensively within British Telecom. I pulled this video from the Open Source arm of BT called ommosoft so they can give you an incite of their usage.
TiddlyWiki in BT from Phil Whitehouse on Vimeo.