This project "was registered on SourceForge.net on Oct 17, 2010, and ... described by the project team as follows: Wikiexe is a simple, easy to use, light desktop wiki. It's designed to use MediaWiki skin, syntax (small subset) and xml export format."
It sounded interesting enough. I downloaded it in order to try it out, but it never even started on my machine (Windows 7, 64 bit), so I had to uninstall it without trying it. It's clearly not ready. So I keep wondering how small the subset of MediaWiki formatting really is.