"QuasiWiki is an experiment in implementing some of the basic principles of wiki in OpenOffice.org Writer. It doesn't turn OpenOffice.org into a fully fledged wiki tool (hence the 'quasi' prefix), but rather adds some wiki-like capabilities. The purpose of the project is to rethink the way OpenOffice.org Writer is used as well as develop some added functionality using the suite's built-in tools." It also uses text2tags.
I have not tried QuasiWiki, as I don't use OpenOffice. It looks interesting, however.