I use some stuff that I wrote for myself, but it is all desktop side, not serverside.... (the search and replace utility I've been dragging around in my sig for the past month is the first piece I broke out from what I use)
I think OldTom might have a few things for server side
http://www.otscripts.com/ots/pcm.html?OTSdefault
and then of course there is Dravyk's Content God......
