Open Source YubiKey AlternativesTop Authenticators and other similar apps like YubiKey

The best open source alternative to YubiKey is Nitrokey. It's not free, so if you're looking for a free alternative, you could try 2FA Authenticator (2FAS) or OVault. If that doesn't suit you, our users have ranked more than 25 alternatives to YubiKey and 13 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to YubiKey are OnlyKey, SoloKeys, GNOME Authenticator and Etopa.

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Alternatives list

  1. Nitrokey icon

    Nitrokey

     21 likes

    Provides robust USB-based encryption, digital signing, and secure login with hardware-level secret key storage, user-defined PIN, tamper-proof smart card, open source design, email and data encryption compatibility, virus protection, and multi-platform support.

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    Nitrokey screenshot 1
     
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    4
    Nitrokey vs YubiKey Comments
    rugk
    Positive
    4

    It's open hardware and software and has been independently audited!

    Guest
    Positive
    3

    Great USB key, open source and open hardware, with professional support.

    Review by a new / low-activity user.
    Guest
    Positive
    0

    This is the only option listed that is actually a hardware token like Yubikey and also has a critical mass of users and support. Open Source is a plus also.

    Review by a new / low-activity user.
    3 of 4 comments
    • Nitrokey is Paid and Open SourceYubiKey is Paid and Proprietary
    • Nitrokey is Privacy focusedYubiKey is not according to our users
  2. 2FA Authenticator (2FAS) icon

    2FA Authenticator (2FAS)

     48 likes

    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*.

    68 2FA Authenticator (2FAS) alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Google Chrome
    • Mozilla Firefox
    2FA Authenticator (2FAS) screenshot 1
     
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    1
    2FA Authenticator (2FAS) vs YubiKey Comments
    David Bronke
    Negative
    2

    This is not a hardware key like YubiKey.

    • 2FA Authenticator (2FAS) is Free and Open SourceYubiKey is Paid and Proprietary
    • 2FA Authenticator (2FAS) is Privacy focused and LightweightYubiKey is not according to our users
  4. OnlyKey icon

    OnlyKey

     14 likes

    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.

    Cost / License

    • Paid
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Chrome OS
    OnlyKey screenshot 1
     
    |
    5
    OnlyKey vs YubiKey Comments
    Top Positive Comment
    Guest
    0

    It have a pin pad to insert secure, on the key, secret in order to use it

    Review by a new / low-activity user.
    Guest
    Positive
    0

    Pin protected, secure backups, FIDO2, whats not to love

    Review by a new / low-activity user.
    DougJohnson
    Positive
    1

    Secure backup feature makes this better than Yubikey

    Review by a new / low-activity user.
    3 of 5 comments
    • OnlyKey is Paid and Open SourceYubiKey is Paid and Proprietary
    • OnlyKey is Privacy focusedYubiKey is not according to our users
  5. Ad
    Screenshot
    Nitrokey icon
    Nitrokey

    Provides robust USB-based encryption, digital signing, and secure login with hardware-level secret key storage, user-defined PIN, tamper-proof smart card, open source design, email and data encryption compatibility, virus protect...

    https://www.nitrokey.com
    Learn More
  6. OVault icon

    OVault

     5 likes

    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.

    Cost / License

    Application type

    Platforms

    • Mac
    • iPhone
    • iPad
    OVault screenshot 1
     
  7. SoloKeys icon

    SoloKeys

     10 likes

    Solo is an open source security key, and you can get one at solokeys.com.

    Cost / License

    • Paid
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    SoloKeys screenshot 1
     
    |
    1
    SoloKeys vs YubiKey Comments
    tomsny
    Negative
    1

    SoloKeys don't do everything YubiKey does, a better option is OnlyKey which does pretty much everything YubiKey does

    • SoloKeys is Paid and Open SourceYubiKey is Paid and Proprietary
  8. GNOME Authenticator icon

    GNOME Authenticator

     11 likes

    Gnome Authenticator is a desktop 2FA code generator for Linux desktops, like Ubuntu.

    Cost / License

    Application type

    Platforms

    • Linux
    • Linux Mobile
    • Flathub
    • GNOME
    GNOME Authenticator screenshot 1
     
    |
    1
    GNOME Authenticator vs YubiKey Comments
    Guest
    Negative
    3

    It's not a Key, therefore can't be compared

    Review by a new / low-activity user.
    • GNOME Authenticator is Free and Open SourceYubiKey is Paid and Proprietary
    • GNOME Authenticator is Security-focused and Privacy focusedYubiKey is not according to our users
  10. Etopa icon

    Etopa

     2 likes

    Etopa is a two-factor-authentication app, which runs as a web server and can be accessed using a web browser or using an Android app. You can use the Etopa.de instance or host your own.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Online
    • Android
    Etopa screenshot 1
     
  11. CloudOTP icon

    CloudOTP

     1 like

    An awesome two-factor authenticator based on Flutter, supports Android, Windows and Linux platforms, and supports multiple cloud backup methods such as Onedrive, Dropbox, WebDAV, S3Cloud, etc.

    29 CloudOTP alternatives

    Cost / License

    Platforms

    • Linux
    • Flathub
    • Windows
    • Mac
    • Android
    • iPhone
     
  12. OTPClient icon

    OTPClient

     6 likes

    GTK+ application for securely managing TOTP & HOTP tokens. Content is encrypted on disk using AES256-GCM. Master password derived using PBKDF2 with 100k iterations & SHA512 as hash algorithm. Can import encrypted backups from andOTP & Authenticator+.

    Cost / License

    Application type

    Platforms

    • Linux
    • Flathub
    • GNOME
    Main - empty
     
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    1
    OTPClient vs YubiKey Comments
    Guest
    Negative
    1

    It's not a Key, therefore can't be compared

    Review by a new / low-activity user.
    • OTPClient is Free and Open SourceYubiKey is Paid and Proprietary
    • OTPClient is Privacy focused and LightweightYubiKey is not according to our users
  13. CanoKeys icon

    CanoKeys

     2 likes

    An open-source secure key.

    Cost / License

    Platforms

    • Mac
    • Windows
    • Linux
    CanoKeys screenshot 1
     
    |
    1
    CanoKeys vs YubiKey Comments
    Guest
    Negative
    0

    The website does not show anything meaningful

    Review by a new / low-activity user.
    • CanoKeys is Free and Open SourceYubiKey is Paid and Proprietary
  14. Authorizer icon

    Authorizer

     3 likes

    A Password Manager for Android with Auto-Type over USB and Bluetooth, OTP and much more.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Android
     
    |
    1
    Authorizer vs YubiKey Comments
    David Bronke
    Negative
    0

    This is not a hardware key, so it can't be compared to YubiKey.

    • Authorizer is Free and Open SourceYubiKey is Paid and Proprietary
  15. Krypton icon

    Krypton

     2 likes

    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.

    Cost / License

    • Free
    • Open Source

    Platforms

    • iPhone
    • iPad
    Krypton screenshot 1
     
    |
    1
    Krypton vs YubiKey Comments
    Guest
    Negative
    0

    It's not a Key, therefore can't be compared

    Review by a new / low-activity user.
    • Krypton is Free and Open SourceYubiKey is Paid and Proprietary
12 of 13 YubiKey alternatives