Simply Simple: Homepages with Tilswiki
Viennese developer Tilmann Singer has programmed a wiki that is in continual edit mode. The current Tilswiki 0.8 also provides versioning.
The wiki workpage has no Edit button: the user can use a toolbar for headings, text elements and graphics insertions. Working this in the background (on Firefox 3 only) is the contentEditable attribute. The software automatically saves your edits.
New to Tilswiki 0.8 is the version history. On the History dialog, a slider provides access to older versions, with the option of saving them as newer ones.