[chiefalchemist]

I'm not sure what your criteria are but I've been using LastPass (Enterprise) with 2FA (Yubikey) for a couple years now. Aside from the Yubikey, the key benefit is I can share a folder with someone using the free version.

It's not cheap but it works and afaik it's secure (esp with the Yubi).

[roustem]

1Password Family accounts have support for free guest accounts that can be used to share information with other people without requiring them to purchase.