The title pretty much sums up the question. I have looked, and could not find anything, neither paid, nor free. I know about the DocPreview plugin, however that does not work in Safari 5.1+. There is also the Word Browser Plugin, it was last updated in 2009, and also appears to no longer work.
Is there another method to view Word documents inline in Safari? That is, if I click on a link, I would like to see the document full window in safari, and not be downloaded, forcing me to find the file and open it separately.