Yeah, we all know wikis are cool. True to the dream of Tim Berners-Lee, etc. Nevertheless, they can seem like a hassle to set up, particularly if they are just for personal use.
TiddlyWiki nails this with a sweet mixture of HTML, CSS and Javascript and no backend machinery required. The whole thing is contained in a single HTML file. Changes to the wiki are stored in this file, making it ideal for transporting around on a memory stick.
Random text files of ‘notes’ no more! As the site puts it: a reusable non-linear personal web notebook or the delicious-sounding Wiki-on-a-Stick.