OpenSK Alternatives

    OpenSK is described as 'open-source implementation for security keys written in Rust that supports both FIDO U2F and FIDO2 standards' and is an app in the Development category. There are more than 10 alternatives to OpenSK for a variety of platforms, including Android, iPhone, Android Tablet, iPad and Windows. The best alternative is andOTP, which is both free and Open Source. Other great apps like OpenSK are Google Authenticator (Free), YubiKey (Paid), SoloKeys (Paid, Open Source) and Nitrokey (Free, Open Source).

    This page was last updated Aug 7, 2020

    1. It implements Time-based One-time Passwords (TOTP) and HMAC-Based One-Time Passwords (HOTP). Simply scan the QR code and login with the generated 6-digit code.
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      • FreeProprietary
      • Android
      • iPhone
      • Blackberry
      • Android Tablet
      • iPad
      • Android Wear
      • Wordpress
      Google Authenticator generates 2-step verification codes on your phone.
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      • Windows
      • Linux
      • Android
      • Android Tablet
      The YubiKey is a one-time password device for secure login with two-factor authentication
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      • Mac
      • Windows
      • Linux
      • Android
      Solo is an open source security key, and you can get one at solokeys.com.
    2. Nitrokey is an USB key to enable highly secure encryption and signing of emails and data, as well as login to the Web, networks and computers. Other than ordinary software solutions, the secret keys are always stored securely inside the Nitrokey.
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    3. Krypton implements the standardized FIDO Universal 2nd Factor (U2F) protocol to provide secure, un-phishable two-factor authentication on the web, using just your phone.
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      • FreeProprietary
      • iPhone
      • iPad
      This app is created for use with the YubiKey NFC and NEO to copy One-time-passwords (OTPs) from a YubiKey into the iOS clipboard.
      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      U2F Zero is a USB token that works with any service that supports U2F, like Google services. It works for 2 factor authentication or sometimes even password replacement. No drivers needed. Just plug it in and press a button.

      Discontinued

      The official website does not exist anymore, and the Github repository's README states the project no longer maintained: https://github.com/conorpp/u2f-zero/blob/master/README.md

    4. 2FAS Authenticator is a simple and free application for Two Factor Authentication (2FA Authentication) which generates Time-based One-time Passwords (TOTP) and PUSH authentication*. It helps keep your online accounts secure on supporting TOTP websites.
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    5. Zoho OneAuth, a free multi-factor authentication app, adds a firm layer of security to your account to protect it from password breaches.Enables single sign-on and works even when your device goes offline.
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    Showing 10 of 11 alternatives