We house and inhouse team wiki. And there we put all the necessary information for each project we are developing:
- repositories
- addresses for virtual machines
- passwords
- project documentations
- project overview
- project status
and anything else we fill needs to be written on a project. And it is the most useful web application we are running (besides Mantis) . On more general pages we put a definition of every taxonomy we are using, general project guidelines, polices, coding and developing practices we use.
It is there, it is simple and effective and I think every team should have one of those.