There are individual password managers our there (PassPack, LastPass, 1Password, ...) but they don't work very well with teams. I feel like sharing passwords by group is a better solution (which Mitro does). Obviously the real solution is to have SSO on all the services but it's not always possible.
EDIT: That being said, I would rather have access to the source and host the service myself. You can't get much more sensible than having all your company passwords stored in a third-party.