Now 1Password remembers sites that use third-party accounts like Google or Facebook to log in - The Verge
1Password thus is now able to give customers an option to sign in to sites or apps that require, say, their Google, Apple, GitHub, or Facebook credentials with just one click.
A 1Password pop-up will inform you which provider it’s linked to and ask whether you’d like to click to sign in with your stored login credentials.
For now, 1Password can save login credentials for multiple accounts with the same provider that are linked to the same app.