Authy is described as 'Manage and secure two-factor authentication easily across Gmail, Dropbox, and more. Sync devices, secure backups, and enjoy offline access' and is a very popular Authenticator in the security & privacy category. There are more than 50 alternatives to Authy for a variety of platforms, including iPhone, Android, iPad, Android Tablet and Mac apps. The best Authy alternative is Aegis Authenticator, which is both free and Open Source. Other great apps like Authy are Ente Auth, Proton Authenticator, Bitwarden Authenticator and 1Password.
Password manager that can generate unique passwords and also record purchase history across websites.
Dashlane does not do 2FA/MFA at all.
Dashlane doesn't provide two-factor authentication/one-time password functionality.
OnlyKey is an open source alternative to YubiKey. OnlyKey natively supports: a hardware password manager, multiple two-factor methods (FIDO2, TOTP, and Yubico® OTP), passwordless SSH login, and OpenPGP.
OVault is a super simple OTP app that lets you view and manage OTPs for all your accounts. Set up OTPs by scanning QR codes with your devices Camera App, or by manually providing the OTP secret to the app.
Gnome Authenticator is a desktop 2FA code generator for Linux desktops, like Ubuntu.
Open-source authenticator app for iOS and macOS generates time-based one-time passwords, supports secure iCloud sync and encrypted backup, FaceID and TouchID unlocking, QR code scanning, custom icons, search, handoff for copying codes, and encrypted export.
Tofu generates one-time passwords to help you protect your online accounts. These passwords are used together with your normal password when you sign into services like Google, Facebook, Dropbox, Amazon, and GitHub.
Duo Mobile works with Duo Security's two-factor authentication service to make logins more secure. The application generates passcodes for login and can receive push notifications for easy, one-tap authentication.
Protectimus Solutions provides a powerful multi-factor authentication service. We offer 2FA SaaS platform and on-premise version of the product which supports a great variety of TOTP tokens and program tokens for OTP delivery.
LastPass Authenticator offers a unique one-tap password verification experience that no other authenticator app delivers.
Keysmith is a token generator for your two-factor authentication (2FA) logins. It supports time and hash-based one-time passwords (TOTP/HOTP).
2fast (acronym for two factor authenticator supporting TOTP) is the first free, open source, two factor authenticator for Windows and Android with the ability to store the sensitive data encrypted at a place of your choice instead of a 3rd party cloud location.
Mauth (pronounced Moth) is a Two-Factor Authentication app with support for TOTP and HOTP (coming soon) and compatibility with Google Authenticator.
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Dashlane supports generating TOTP, so the other comments saying Dashlane does not support this, are wrong. See: https://support.dashlane.com/hc/en-us/articles/115003383365