TiddlyWiki is an ingenious free application that is ideal for taking and organizing notes, organizing to-do lists, and even managing small personal databases. It is basically an html file (a webpage) stuffed with special code that allows you to create small snippets of information called Tiddlers. These tiddlers can be linked by tags and hyperlinks, and tucked away. When you need them again, you can use a search window, your own personalized tables of contents, or any number of handy tiddler indexes to find them quickly. Think of TiddlyWiki as an easily-searchable catalog of 3x5 cards and post-it notes all linked together in one file.
You don't need to buy a program to use TiddlyWiki. It is an html file that you can read and edit using nothing more than your Internet browser. And you don't need to be online to use TiddlyWiki. You can quickly download any TiddlyWiki to your computer to use offline. You can then take it with you wherever you go, on a USB memory stick (called a “Wiki on a Stick”) and edit it on any computer that has a relatively recent web browser, preferably Mozilla’s free browser Firefox.
TiddlyWikis were invented by Jeremy Ruston. His site, with the original documentation and other information, can be found at
http://www.tiddlywiki.com/.