Bitwarden is free, and if you are concerned about these terms changing, the excellent self-hosted open source server implementation "vaultwarden" [1] supports p

Bitwarden is free, and if you are concerned about these terms changing, the excellent self-hosted open source server implementation "vaultwarden" [1] supports passkeys as well. [1] https://github.com/dani-garcia/vaultwarden https://github.com/dani-garcia/vaultwarden