Cerberus guild

Maybe I'm just slow to catch on, but I think the iMatrix 3rd party tool is quite new and might be worth a look (haven't used it myself)

http://www.kewlpack.com/iMatrix.shtm

I have no idea whether or not it contains any spyware/backdoors/keyloggers so use at your own risk, as with all 'free' software!!!

Finally tried this out. It looks like a really nice alternative to NanoNanny. They both essentially do the same thing, but iMatrix looks nicer and does things a little bit differently.