[xienze]

I use self-hosted Bitwarden (Vaultwarden) for this. It runs on my local network, and I have it installed on my phone etc. When I’m on my local network, everything works fine. When I’m not on my local network, the phone still has the credentials from the last time it was synced (i.e., last time it was used while the phone was on the home network). It’s a pretty painless way to keep things in sync without ever allowing Bitwarden to be accessible outside my home network.

[salt6763]

Bitwarden does not let you create credentials while not connected to a server. Its a "read only" copy.

There is an alternative client called keyguard that allows you to create or modify credentials, then sync to the server later.