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, YubiKey and Nitrokey.

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OnlyKey alternatives page was last updated

Alternatives list

  1. Authy icon
     225 likes

    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.

    84 Authy alternatives

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Apple Watch
     
  2. YubiKey icon
     35 likes

    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.

    25 YubiKey alternatives

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Google Chrome
     
  3. Nitrokey icon
     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.

    14 Nitrokey alternatives

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
     
  4. OVault icon
     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
     
  5. 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.

    65 Microsoft Authenticator alternatives

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Android
    • iPhone
    • Android Tablet
    • Windows Phone
    • iPad
     
  6. Keysmith icon
     5 likes

    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

    Application type

    Platforms

    • Linux
    • KDE Plasma
    • Linux Mobile
    • Flathub
    • Plasma Mobile
    • Flatpak
     
  7. Gnome Authenticator is a desktop 2FA code generator for Linux desktops, like Ubuntu.

    Cost / License

    Application type

    Platforms

    • Linux
    • Linux Mobile
    • Flathub
    • GNOME
     
  8. LastPass Authenticator offers a unique one-tap password verification experience that no other authenticator app delivers.

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Android
    • iPhone
    • Android Tablet
    • iPad
     
  9. Etopa icon
     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
     
  10. 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 26 OnlyKey alternatives