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A detailed guide to the world of authenticator apps for those looking for an alternative to Google Authenticator.

If you use two-factor authentication with one-time codes generated in an app, Google Authenticator is not your only option. Since Google’s original solution was created a decade or so ago, a number of alternatives that outperform it in convenience and functionality have come on the scene.

As recently as three years ago, you could count available authenticator apps on one hand, but with a few dozen in the mix now, it is easy to get lost in the options. To help you choose an authenticator that works with your operating systems, we have grouped the 10 most noteworthy by OS:

• Authenticator apps for Android: andOTP, Twilio Authy, Google Authenticator, Microsoft Authenticator, Cisco Duo Mobile, FreeOTP
  
• Authenticator apps for iOS 15: OTP auth, Step Two, Twilio Authy, Google Authenticator, Microsoft Authenticator, Cisco Duo Mobile, FreeOTP, iOS built-in authenticator
  
• Authenticator apps for Windows: WinAuth, Twilio Authy
  
• Authenticator apps for macOS: Step Two, OTP auth (paid version only), Twilio Authy
  

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