A password manager can help with the difficulty of having to remember passwords of varying complexity or length for different services. Here, only one master password needs to be remembered, which protects all other passwords.
However, its use does not only offer advantages. If one forgets the master password and does not (or no longer) know the passwords stored in the password manager, one has no access to the services protected with it. If an attacker gets hold of the master password, all managed services are compromised, unless they use multi-factor authentication.
The SCC therefore does not recommend a specific password manager, but refers to the website of the Federal Office for Information Security.