I think is important to use open audit like password repository.
I can add credentials but after I can't show the password. So if I need a password for a device I don't have this information available.
Is it possible to show the passwords like in the old version of open audit?
Open-AudIT is not designed to be a password repository. I can't recommend you use it for that. I'd suggest you look at an application specifically designed for this. I won't recommend any particular password manager, but there is a reasonable list on Wikipedia. There are free and open source applications on that list as well.