Couple moths ago we started development of MPS based applications. One
of this applications is MPS based wiki system. You can browse it from
web browser but if you want to edit pages you can use MPS based editor.
We implemented it as WebStart application so you have to install JRE 5.0
and register webstart files in you browser.
MPSWiki can be found at http://www.sergeydmitriev.com/mps/wiki/