I thought Bitwarden was super cool until I realized that the self-hosted version still phones home to their servers. Not to say that you couldn't fix that, I mean, the source is all available.

But shamefully, as it stands, "self hosted" for Bitwarden really means "host on your server, with our server's permission"

Reference (see "Installation Id/Key"): https://help.bitwarden.com/article/install-on-premise/