This prompted me to check, and seems like KeePassXC supports storing passkeys, at least if you use the browser extension and enable a flag in its config. Until

This prompted me to check, and seems like KeePassXC supports storing passkeys, at least if you use the browser extension and enable a flag in its config. Until now I had thought it only supported unlocking your database with passkeys, I didn't know about it being able to actually store them. I guess I'll try setting them up on some unimportant website to see for myself what all the hype is about.