Gnome Authenticator

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FreeOTP

LastPass Authenticator provides secure two-factor authentication. With LastPass Authenticator, you can protect your online accounts with a second piece of information before access is granted to an account. Allowing for greater security of your online accounts.

Authy is a two-factor authentication (2FA) for protecting yourself online. With Authy you can defeat cyber criminals & avoid account takeovers with stronger security. Authy is created by Twilio and avalible for Android, iOS and Google Chrome. It integrates with many third-party services such as Facebook, Amazon, Google, Microsoft, Dropbox and many more.

OTP Auth is an two factor authentication application that allow you to use calculated one time passwords for your online acconunts. OTP Auth is avalible for iOS and macOS, and works with popular online services such as Google Mail, Amazon, GitHub, Dropbox and many more.

andOTP implements time-based one-time passwords (TOTP) and HMAC-based one-time passwords (HOTP). With andOTP you can simply scan the QR code and login with the generated 6-digit code. Allowing you to more easily and securely access your online accounts.

OTP Auth is an two factor authentication application that allow you to use calculated one time passwords for your online acconunts. OTP Auth is avalible for iOS and macOS, and works with popular online services such as Google Mail, Amazon, GitHub, Dropbox and many more.

Google Authenticator is a software-based authenticator used for secure account management. The software is developed at Google and is a two-step verification services, using a time-based one-time password algorithm. When using Google Authenticator to secure an online account or service, your risk of getting compromised is drastically reduced. When an account is protected with Google Authenticator an attacker must not only know your original password but also has access to any of your Google Authenticator enabled devices to gain access to your account.