TiddlyWiki is a personal notebook which runs in the browser. You can save the tiddlywiki to your local filesystem or use one of several services to save it on a server.

For more info, please visit http://tiddlywiki.com.

Note: In the core code, "TiddlyWiki" refers to the store of tiddlers. For most intents and purposes, it's equivalent to "store". (In fact, the "store" is a global variable of type "TiddlyWiki", but since it is usually the *only* instance of TiddlyWiki, it is effectively synonomous with TiddlyWiki.)