OnlyKey AlternativesAuthenticators and other similar apps like OnlyKey

OnlyKey is described as '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' and is a Authenticator in the security & privacy category. There are more than 25 alternatives to OnlyKey for a variety of platforms, including Android, iPhone, Linux, Mac and iPad apps. The best OnlyKey alternative is Bitwarden Authenticator, which is both free and Open Source. Other great apps like OnlyKey are Authy, Google Authenticator, andOTP and YubiKey.

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Alternatives list

  1. Copy a direct link to this comment to your clipboard

    Bitwarden Authenticator generates verification codes for two-factor authentication, ensuring your identity is verified when you log into accounts.

    64 Bitwarden Authenticator alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Android
    • iPhone
    • Android Tablet
    • iPad
     
    • Bitwarden Authenticator is the most popular Android, iPhone, iPad & Android Tablet alternative to OnlyKey.

    • Bitwarden Authenticator is the most popular Open Source & free alternative to OnlyKey.

    • Bitwarden Authenticator is Free and Open SourceOnlyKey is Paid and Open Source
    • Bitwarden Authenticator is LightweightOnlyKey is not according to our users
  2. Authy icon
     225 likes
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    Manage two-factor authentication seamlessly across various platforms with secure cloud backups and offline access. From Gmail to LastPass, enhance security effortlessly. Sync multiple devices securely and protect sensitive data with robust encryption.

    85 Authy alternatives

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Apple Watch
     
  3. andOTP icon
     78 likes
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    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.

    56 andOTP alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Android
    • Android Tablet
     
  4. YubiKey icon
     34 likes
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    The multi-protocol security key offers the highest assurance, protecting devices with passwordless workflows and strong 2FA against phishing. It plugs into computers, tablets, and mobile devices, integrates PIN or biometric for identity verification, and reduces helpdesk costs.

    26 YubiKey alternatives

    Cost / License

    • Pay once
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Google Chrome
     
    • YubiKey is the most popular Windows, Mac & Linux alternative to OnlyKey.

    • YubiKey is the most popular commercial alternative to OnlyKey.

    • YubiKey is Paid and ProprietaryOnlyKey is Paid and Open Source
  5. Nitrokey icon
     21 likes
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    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

    • Pay once
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
     
  6. OVault icon
     4 likes
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    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

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • iPhone
    • iPad
     
  7. Copy a direct link to this comment to your clipboard

    Sign in is easy, convenient, and secure when you use Microsoft Authenticator. Use your phone, not your password, to log into your Microsoft account. You simply have to enter your username, then approve the notification sent to your phone.

    64 Microsoft Authenticator alternatives

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Android
    • iPhone
    • Android Tablet
    • Windows Phone
    • iPad
     
  8. Keysmith icon
     5 likes
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    Keysmith is a token generator for your two-factor authentication (2FA) logins. It supports time and hash-based one-time passwords (TOTP/HOTP).

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Linux
    • KDE Plasma
    • Linux Mobile
    • Flathub
    • Plasma Mobile
    • Flatpak
     
  9. Copy a direct link to this comment to your clipboard

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

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Linux
    • Linux Mobile
    • Flathub
    • GNOME
     
  10. Etopa icon
     2 likes
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    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 is the most popular Web-based alternative to OnlyKey.

    • Etopa is Free and Open SourceOnlyKey is Paid and Open Source
  11. Copy a direct link to this comment to your clipboard

    Allthenticator unifies digital and physical access with one smartphone-based identity. Users log in to systems and unlock doors via proximity. Supports SSH keys, passkeys, OTP, and peer-based recovery—all managed from a single admin dashboard.

    Cost / License

    • Free Personal
    • Proprietary

    Application type

    Platforms

    • iPhone
    • Windows
    • Android
    • Linux
    • Mac
     
12 of 27 OnlyKey alternatives