The best alternatives to Authy are Cotter, Authentiq, and Two Factor Auth (2FA). If these 3 options don't work for you, we've listed a few more alternatives below.
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An authentication service that lets users log in using only their Phone Numbers without a password. Integrate secure phone number login to your web/apps. It’s universal, works across apps, and doesn't require users to have a Cotter account.
Delight customers and users with emoji based verification. Authmoji delivers a robust API and app that helps you verify and secure users and future proof your business with two-factor security (2FA).
SaaStarter is a Nuxt.js template with authentication and payment modules. Connect Firebase and Stripe and get - Pre-built pages like Signup, password reset, email recovery. - Easy to use Stripe components.
Auth. is a 2FA and OTP management tool for everyone. Works with all Apple personal devices using iCloud Keychain. Scan the QR Code and Done! Or you may add your account manually from your provider. Safari extension is also available for auto-fill-in.