Google Authenticator AlternativesOnly Open Source apps categorised as Authenticators

The best open source Authenticator alternative to Google Authenticator is Aegis Authenticator. If that doesn't suit you, our users have ranked more than 50 alternatives to Google Authenticator and many of them are open source Authenticators so hopefully you can find a suitable replacement. Other interesting open source Authenticator alternatives to Google Authenticator are KeePass, Ente Auth, Proton Authenticator and Bitwarden Authenticator.

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. Aegis Authenticator icon

    Aegis Authenticator

     243 likes
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    Aegis Authenticator is a free, secure and open source app to manage your 2-step verification tokens for your online services.

    51 Aegis Authenticator alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Android
    • F-Droid
    Aegis Authenticator screenshot 1
    Aegis Authenticator screenshot 2
    Aegis Authenticator screenshot 3
     
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    10
    44
    Comments about Aegis Authenticator as an Alternative to Google Authenticator
    Top Positive Comment
    Guest
    2

    Simple, open source, no ad, import/export of your data

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

    FOSS alternative to other authenticator services. Works without issues while keeping it simple and functional.

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

    More flexible, can add an additional layer of security on top of your codes, lets you organize your codes into categories, doesn't depend on Google for cloud backups, and it's easy to import from Google Auth.

    Show more comments
    3 of 10 comments
    Google Authenticator Icon
    Aegis Authenticator icon

    • Almost everyone thinks Aegis Authenticator is a great Google Authenticator alternative.

    • Aegis Authenticator is the most popular Android alternative to Google Authenticator.

    • Aegis Authenticator is the most popular Open Source & free alternative to Google Authenticator.

    • Aegis Authenticator is Free and Open SourceGoogle Authenticator is Free and Proprietary
    • Aegis Authenticator is Privacy focused, Lightweight and CustomizableGoogle Authenticator is not according to our users
  2. 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
    Entry Templates Plugin
     
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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.
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    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
  4. 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
  5. 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
     
  9. Keepass2Android icon

    Keepass2Android

     151 likes
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    Keepass2Android is an open source password manager application for Android. It reads and writes .kdbx-files, the database format used by the popular KeePass 2.x Password Safe for Windows and other desktop operating systems.

    148 Keepass2Android alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Android
    • Android Tablet
    Keepass2Android screenshot 1
    Keepass2Android screenshot 2
    Keepass2Android screenshot 3
     
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    1
    10
    Comments about Keepass2Android as an Alternative to Google Authenticator
    Guest
    Positive
    2

    Keepass2Android supports TOTP. The better thing is, TOTP seed works with desktop applications too. Therefore, you need only one database for desktop and mobile devices. Also, built-in Keepass keyboard allows autofill all inputs from one place, you don't need to switch between applications.

    Review by a new / low-activity user.
    Google Authenticator Icon
    Keepass2Android icon

    • Almost everyone thinks Keepass2Android is a great Google Authenticator alternative.

    • Keepass2Android is Free and Open SourceGoogle Authenticator is Free and Proprietary
    • Keepass2Android is Privacy focused and LightweightGoogle Authenticator is not according to our users
  10. 2FA Authenticator (2FAS) icon

    2FA Authenticator (2FAS)

     48 likes
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    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*.

    69 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
    2FA Authenticator (2FAS) screenshot 2
    2FA Authenticator (2FAS) screenshot 3
     
  11. andOTP icon

    andOTP

     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
    Main (Light theme)
    Settings (Light theme)
    Backup (Light theme)
     
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    2
    23
    Comments about andOTP as an Alternative to Google Authenticator
    Guest
    Positive
    4

    It offers the same functionality as other open source TOTP apps, but additionally offers plain-text (unencrypted) and encrypted backups of your configured TOTP accounts. This app also features a dark mode for nicer view. Besides that, the app offers a lot of different icons to apply to every TOTP entry, so you can find your desired entry easier, if you have a lot in total. To make finding the specific entry even easier, you can assign tags to them, as well.

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

    I like it because it is open source. It has good features. More secure. And doesn't have useless features unlike google auth while has more good features.

    Review by a new / low-activity user.
    Google Authenticator Icon
    andOTP icon

    • Almost everyone thinks andOTP is a great Google Authenticator alternative.

    • andOTP is Free and Open SourceGoogle Authenticator is Free and Proprietary
    • andOTP is Security-focused and Privacy focusedGoogle Authenticator is not according to our users
  12. FreeOTP icon

    FreeOTP

     76 likes
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    FreeOTP is a two-factor authentication application for systems utilizing one-time password protocols with support for Android (6 or later) and iOS (11 or later). Tokens can be added easily by scanning a QR-code or by manually entering in the token configuration.

    58 FreeOTP alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Android
    • iPhone
    • Android Tablet
    • iPad
    FreeOTP screenshot 1
    FreeOTP screenshot 2
    FreeOTP screenshot 3
     
  13. Stratum icon

    Stratum

     22 likes
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    A free open-source two factor authentication app for Android. It features encrypted backups, icons, categories and a high level of customisation. It also has a Wear OS companion app.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Android
    • Android Tablet
    • Android Wear
    • F-Droid
    Stratum screenshot 1
    Stratum screenshot 2
    Stratum screenshot 3
     
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    1
    Comments about Stratum as an Alternative to Google Authenticator
    Dominik Pala
    Positive
    1

    It works on wear os and it is open-source.

    Google Authenticator Icon
    Stratum icon
    • Stratum is Free and Open SourceGoogle Authenticator is Free and Proprietary
    • Stratum is Privacy focused and LightweightGoogle Authenticator is not according to our users
  14. 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
12 of 28 Google Authenticator alternatives