(cross posting from another question geared for corporate users)
I've worked with "Secret Server" at http://www.thycotic.com/ . I can provision a single password and share it among as many or as few individuals as I want.
There is an audit trail, and a great search functionality built into the web application. There is also an online "cloud" version of the application that is free for one user.
You can create a new secret for each device you own, and add your own as needed:
All access to this database is secured by local, or Active Directory credentials. If you choose to do so, you can have seamless login (SSO) to access the database for the currently logged in user over Kerberos/NTLM.
Overall, I think this is a good choice for a team, and general repository for corporate security information.