[Zope] What happened to some contributed software?

I just went to http://www.zope.org/Download/Contrib to download UserDB or something like that and I can't find it. I am sure there was a contribution that did user authentication using an SQL database. Now I want to do that and I can't find it. I also remember a MySQL insert wizard. Can't find it either! Anybody know where they are?? Phil A.