Open Source Google Authenticator Alternatives for Windows

Google Authenticator is not available for Windows but there are plenty of alternatives that runs on Windows with similar functionality. The best open source Windows alternative is KeePass. If that doesn't suit you, our users have ranked more than 50 alternatives to Google Authenticator and many of them are open source and available for Windows so hopefully you can find a suitable replacement. Other interesting open source Windows alternatives to Google Authenticator are Ente Auth, Proton Authenticator, OneKeePass and KeeWeb.

filter to find the best alternatives

Google Authenticator alternatives are mainly Authenticators, but if you're looking for Password Managers you can filter on that. Other popular filters include Open Source, EU, Authenticator, Open Source + Authenticator and iPhone + Open Source. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Google Authenticator.
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Alternatives list

  1. KeePass icon

    KeePass

     1642 likes
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    Free and open source password manager offering secure local storage of passwords in an encrypted database, strong AES and Twofish encryption, master key or key file access, portable version, plugin support, password generation, and optional two-factor authentication.

    243 KeePass alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Mono
    Main window
     
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    6
    Comments about KeePass as an Alternative to Google Authenticator
    Top Positive Comment
    Guest
    1

    Of course can you use KeePass and apps that utilize kdbx files as a TOTP generator. Just read it up.

    Review by a new / low-activity user.
    Top Negative Comment
    lau22
    8

    Unrelated - doesn't provide MFA codes.

    Guest
    Negative
    0

    keepass does not do what goole auth does, 2FA OTPs

    Review by a new / low-activity user.
    Show more comments
    3 of 6 comments
    Google Authenticator Icon
    KeePass icon

    • This alternative is disputed. KeePass is a legitimate Google Authenticator alternative, but it might have issues that some users think are important.

    • KeePass is the most popular Windows, Mac & Linux alternative to Google Authenticator.

    • KeePass is Free and Open SourceGoogle Authenticator is Free and Proprietary
    • KeePass is Lightweight, Security-focused, Privacy focused and CustomizableGoogle Authenticator is not according to our users
  2. Ente Auth icon

    Ente Auth

     166 likes
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    ente's Authenticator app helps you generate and store 2 step verification (2FA) tokens on your mobile devices.

    42 Ente Auth alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Flathub
    • F-Droid
    • Flatpak
    • WebApps
    Ente Auth screenshot 1
     
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    8

    • Almost everyone thinks Ente Auth is a great Google Authenticator alternative.

    • Ente Auth is the most popular Web-based, iPhone, iPad & Android Tablet alternative to Google Authenticator.

    • Ente Auth is Free and Open SourceGoogle Authenticator is Free and Proprietary
    • Ente Auth is Privacy focused, Lightweight and Security-focusedGoogle Authenticator is not according to our users
  4. Proton Authenticator icon

    Proton Authenticator

     77 likes
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    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.

    61 Proton Authenticator alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • F-Droid
    Proton Authenticator screenshot 1
     
  5. OneKeePass icon

    OneKeePass

     24 likes
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    OneKeePass supports the well known KeePass-compatible database (Kdbx 4.x). It stores and manages all your passwords and other sensitive information in a single encrypted file that can be stored in any location, including local and public cloud solutions. You keep?

    77 OneKeePass alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • F-Droid
    OneKeePass screenshot 1
     
  6. KeeWeb icon

    KeeWeb

     116 likes
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    Web and desktop password manager compatible with KeePass. Works online in any modern browser or as a desktop app for Windows, macOS, and Linux.

    192 KeeWeb alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    KeeWeb screenshot 1
     
  7. Authenticator Extension icon

    Authenticator Extension

     19 likes
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    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

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Microsoft Edge
    • Google Chrome
    • Mozilla Firefox
    Authenticator Extension screenshot 1
     
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    2
    Comments about Authenticator Extension as an Alternative to Google Authenticator
    f3l1x
    Positive
    0

    Easy, Open Source and available via Browser Addon. You can even scan the QR Code with a screenshot. BEST 2FA!!!

    Guest
    Positive
    0

    Free, open source, and a browser extension for multiple browsers so you can use it on any platform? Hell yes.

    Also it's super simple. It just does what it says on the box, no extra crap you don't want.

    Review by a new / low-activity user.
    Google Authenticator Icon
    Authenticator Extension icon
    • Authenticator Extension is Free and Open SourceGoogle Authenticator is Free and Proprietary
    • Authenticator Extension is Privacy focused and LightweightGoogle Authenticator is not according to our users
  9. AuthPass icon

    AuthPass

     24 likes
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    Manage all your passwords across all devices. Open Source password manager compatible with kdbx/keepass. Available on Android, iOS, iPadOS, MacOS, Linux and Windows. It can also be used as a cross-platform supported two factor authentication app.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Snapcraft
    • Flathub
    • Online
    AuthPass screenshot 1
     
  10. OnlyKey icon

    OnlyKey

     14 likes
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    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

    • Pay once
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Chrome OS
    OnlyKey screenshot 1
     

    • OnlyKey is the most popular commercial alternative to Google Authenticator.

    • OnlyKey is Paid and Open SourceGoogle Authenticator is Free and Proprietary
    • OnlyKey is Privacy focusedGoogle Authenticator is not according to our users
  11. 2fast icon

    2fast

     5 likes
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    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

    Application type

    Platforms

    • Windows
    2fast screenshot 1
     
  12. Open Authenticator by Skyost icon

    Open Authenticator by Skyost

     1 like
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    Secure your online accounts with Open Authenticator : a free, open-source and lovely-crafted TOTP (Time-Based One-Time Password) manager.

    Cost / License

    • Freemium (Subscription)
    • Open Source

    Application type

    Platforms

    • Mac
    • iPhone
    • iPad
    • Android
    • Android Tablet
    • Windows
    Open Authenticator by Skyost screenshot 1
     
  13. Keyguard icon

    Keyguard

     4 likes
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    Keyguard is an alternative client for the Bitwarden platform, created to provide the best user experience possible. Keyguard uses Material You and is developed for Android.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • F-Droid
    • Flatpak
    Keyguard screenshot 1
     

  14. Hermes OTP

     2 likes
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    Hermes offers a straightforward solution for overseeing two-factor authentication accounts (SHA1), providing support for a wide range of platforms, including Gmail, Dropbox, and thousands of other websites.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Windows
    • Mac
    • Linux
    Hermes OTP screenshot 1
     
12 of 23 Google Authenticator alternatives