Free OTP Auth Alternatives for Windows

Alternatives list

1. 

   

   Bitwarden

    1423 likes

   Open-source password manager using AES-256 and PBKDF2 SHA-256 encryption. Securely store and sync logins across iOS, Android, Windows, and more without service provider access.

   239 Bitwarden alternatives

   Cost / License

   • Freemium
   • Open Source

   Application types

   • Password Manager
   • Authenticator

   Origin

   • United States

   Platforms

   • Mac
   • Windows
   • Linux
   • Online
   • Android
   • iPhone
   • Android Tablet
   • iPad
   • Self-Hosted
   • Apple Watch
   • Snapcraft
   • Microsoft Edge
   • Vivaldi
   • Google Chrome
   • Flathub
   • Microsoft SQL Server
   • Tor Browser
   • Safari
   • F-Droid
   • Software as a Service (SaaS)
   • Flatpak
   • Cloudron
   • Docker
   • Opera
   • Chocolatey
   • Mono
   • Brave
   • AppImage
   • Mozilla Firefox

   

   

   

   +9

   

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2. 

   

   Proton Authenticator

    105 likes

   Protect your accounts with Proton Authenticator, a private and secure cross-device two-factor authentication (2FA) that works offline. Created by Proton, the creators of Proton Mail, Proton VPN, Proton Drive, and Proton Pass.

   66 Proton Authenticator alternatives

   Cost / License

   • Free
   • Open Source (GPL-3.0)

   Application type

   • Authenticator

   Origin

   • Switzerland

   Platforms

   • Mac
   • Windows
   • Linux
   • Android
   • iPhone
   • Android Tablet
   • iPad
   • F-Droid
   • Online

   

   

   

   +3

   

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4. 

   

   Ente Auth

    191 likes

   Generates and stores two-factor authentication tokens with device encryption, offers secure cloud backup, multi-device synchronization, offline mode, and import/export through QR, file, or manual input. Migration and restore tools reduce risk of token loss.

   Cost / License

   • Free
   • Open Source (AGPL-3.0)

   Application type

   • Authenticator

   Origin

   • United States

   Platforms

   • Mac
   • Windows
   • Linux
   • Online
   • Android
   • iPhone
   • Android Tablet
   • iPad
   • Flathub
   • F-Droid
   • Flatpak

   

   

   

   +6

   

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5. 

   

   Authenticator Extension

    20 likes

   Authenticator generates two-factor authentication (2FA) codes in your browser. Use it to add an extra layer of security to your online accounts.

   Cost / License

   • Free
   • Open Source (MIT)

   Application type

   • Authenticator

   Origin

   • United States

   Platforms

   • Mac
   • Windows
   • Linux
   • Microsoft Edge
   • Google Chrome
   • Mozilla Firefox

   

   

   

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6. 

   

   2fast

    5 likes

   2fast (acronym for two factor authenticator supporting TOTP) is the first free, open source, two factor authenticator for Windows and Android with the ability to store the sensitive data encrypted at a place of your choice instead of a 3rd party cloud location.

   Cost / License

   • Free
   • Open Source (GPL-3.0)

   Application type

   • Authenticator

   Platforms

   • Windows

   

   

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7. 

   

   Authi

    2 likes

   Modern two-factor authentication app with cloud sync that values privacy and security.

   Cost / License

   • Free
   • Open Source (MIT)

   Origin

   • Hungary
   • EU

   Platforms

   • Windows
   • Android
   • Google Chrome
   • Mozilla Firefox
   • Microsoft Edge

   

   

   

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9. 

   

   2FAGuard

    4 likes

   Encrypted Windows app for managing 2FA codes with AEGIS-256 and Argon2id, supporting Windows Hello, portable use, multilingual interface, token import/export, QR code/manual entry, generic TOTP, local storage, and dark mode interface for enhanced security.

   Cost / License

   • Free
   • Open Source (MIT)

   Application type

   • Authenticator

   Origin

   • Germany
   • EU

   Platforms

   • Windows

   

   

   

   +3

   

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10. 

    

    Protectimus

     7 likes

    Protectimus Solutions provides a powerful multi-factor authentication service. We offer 2FA SaaS platform and on-premise version of the product which supports a great variety of TOTP tokens and program tokens for OTP delivery.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    • Authenticator

    Origin

    • United Kingdom

    Platforms

    • Windows
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad

    

    

    

    +6

    

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11. 

    

    Allthenticator

     1 like

    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

    • Authenticator

    Origin

    • United States

    Platforms

    • iPhone
    • Windows
    • Android
    • Linux
    • Mac

    

    

    

    +1

    

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12. 

    

    Clockode

     1 like

    Clockode is a minimal, and offline-only TOTP code generator that stores your authentication secrets in an encrypted local vault, keeping your two-factor codes private and accessible without needing an internet connection.

    Cost / License

    • Free
    • Open Source (GPL-3.0)

    Platforms

    • Linux
    • Mac
    • Windows
    • Flathub
    • Flatpak

    

    

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13. C

    C

    cotp

     1 like

    Trustworthy, encrypted, command-line TOTP/HOTP authenticator app with import functionality.

    Cost / License

    • Free
    • Open Source (GPL-3.0)

    Application type

    • Authenticator

    Platforms

    • Linux
    • Homebrew
    • Mac
    • Windows
    • Rust

    

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    C

    

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14. 

    

    CryptoPhoto

     4 likes

    CryptoPhoto gives you a fast and safe way to log into your favorite participating web sites while enjoying leading-edge protection against phishing, malware attacks, and scamming.

    Cost / License

    • Freemium
    • Proprietary

    Origin

    • Australia

    Platforms

    • Windows
    • Android
    • Android Tablet
    • Self-Hosted

    

    

    

    +3

    

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