I found a few sources for the beta for Installer. There’s not a ton of stuff in there but a few fun things. I’m sure more to come.
Rip Dev – http://i.ripdev.com
Big Boss – http://apptapp.thebigboss.org/repofiles/installer4/
iSpazio – http://repo.neolinus.org/ispazio/
German – http://sendowski.de/iphone