Moka is a small wiki quine self contained in a single html file. You can store this file on your computer, host it on a server, or put it on a USB stick. It doesn't have any dependency. You just need a browser that can run JavaScript to run it. You don't need internet either. Everything happens offline and stays in your html file.

Feather Wiki is a lightning fast infinitely extensible tool for creating personal non-linear notebooks, databases, and wikis that is entirely self-contained, runs in your browser, and is only 55 kilobytes. The app and all of the content you create using it are stored within the single HTML file generated when you save your wiki. Publishing your content for the world to see is as simple as uploading that file to a web server, and updating is as simple as overwriting the file.

It was created to be like TiddlyWiki but with the smallest file size possible and a style more reminiscent of certain other popular wikis. Feather Wiki provides low-level access to its underlying code framework, so if there's something it can't do out of the box, then you can make it do that thing yourself.

"OpenStreetMap is a free editable map of the whole world. It is made by people like you. "

"Where GTD meets blog"

"An environment that extends current wiki technology to enable rapid deployment, content aggregation, structured data, and powerful extensibility. "

"This page offers a comprehensive list of 3D modeling software for use with Sculpt Maps for Sculpted Prims"

collaborative blog post, in a cadavre exquis way (including the source)

The How-To Manual That Anyone Can Write or Edit

a wikik about Spore (the game)

web2.0 wiki engine (not available yet)