I keep thinking about TiddlyWiki

The idea of a self-modifying webpage is definitely compelling. There are a lot of things about the TiddlyWiki interface I don't like, and it is misnamed, since it is a personal page, not a group editing page, but the idea of writing directly to a webpage without a server has struck a chord. I've been exploring the available resources, and Tiddly Wiki Mania and the Tiddly Wiki Dev discussion group seem like good places to start.

I looked over the Javascript code in the TiddlyWiki page and it seems pretty clean and understandable, although it is 82 pages long. I've been looking for a project to use in learning Ajax, and creating a simple version of a self-modifying page may be something I could have fun with.