Saw this today while further tidying up some stuff with Nextcloud and Yunohost. Thought it might be relevant to the original discussion of how to securely share passwords.
Passwords allows you to store your passwords safely with Nextcloud. The intuitive and modern web interface of the app makes it easy to update and add new passwords from anywhere. Included security checks help you to keep your online accounts safe and up-to-date. You can also share passwords with other Nextcloud users.