use2fa shows, for 2,577 websites and apps, which second factors each one supports, which one is strongest, and how to switch it on. It's independent and isn't affiliated with any service listed.
Where the data comes from
The list of services and methods comes from the 2FA Directory, an open, community-maintained project by 2factorauth, used under the MIT licence. We refresh it regularly and add our own guides, rankings and setup steps. Each service's own help pages are the final word; every service page links to them.
How we choose the "recommended setup"
We rank methods by how well they resist the attacks people actually face: security keys first, then authenticator apps, app approvals, the service's own hardware tokens, and last text, call and email codes. Why that order.
Corrections
If a service has changed its options, email [email protected].