Passkey support arrived in KeePassXC https://github.com/keepassxreboot/keepassxc/issues/1870
Just last week so it’s not in any distributions yet, but a binary can be found here: https://snapshot.keepassxc.org/build-235575/
I haven’t tried it yet because I haven’t been using passkeys because it wasn’t implemented in KeePassXC but now that it is I will try on some page which implements it. Just need to figure out who implements it. I think none of the Fediverse services does yet.
Bitwarden also just released the update for passkeys
Just hoping Vaultwarden will get an update soon to also support it
It looks like it has been updated unless I am not reading it correctly.
https://github.com/dani-garcia/vaultwarden/releases/tag/1.30.0
“Added passkey support, allowing the browser extensions to store and use your passkeys, make sure the extension is updated to version 2023.10.0 or newer for passkey support.”