Open Source 2FA Authenticator (2FAS) Alternatives for Linux

2FA Authenticator (2FAS) is not available for Linux but there are plenty of alternatives that runs on Linux with similar functionality. The best open source Linux alternative is Ente Auth. If that doesn't suit you, our users have ranked more than 50 alternatives to 2FA Authenticator (2FAS) and 12 are open source and available for Linux so hopefully you can find a suitable replacement. Other interesting open source Linux alternatives to 2FA Authenticator (2FAS) are Proton Authenticator, Authenticator Extension, Nitrokey and Keysmith.

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Alternatives list

  1. Ente Auth icon

    Ente Auth

     168 likes

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

    42 Ente Auth alternatives

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Flathub
    • F-Droid
    • Flatpak
    Ente Auth screenshot 1
    Ente Auth screenshot 2
    Ente Auth screenshot 3
     
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    2
    Comments about Ente Auth as an Alternative to 2FA Authenticator (2FAS)
    kurifoxen
    Positive
    0

    Ente is the best open source 2fa app/program out there. Its actively developed and is the only 2fa service with i desktop app as well, so if you lose your phone you can also login through other devices

    Sam Lander
    Negative
    0

    Requires a log in, having 2fa on multiple types of devices like the same laptop you are logging into is more secure, developed in a country with strong anti-privacy laws.

    2FA Authenticator (2FAS) Icon
    Ente Auth icon

    • Most users think Ente Auth is a great 2FA Authenticator (2FAS) alternative.

    • Ente Auth is the most popular Web-based, Windows, Mac, iPhone, Linux, iPad & Android Tablet alternative to 2FA Authenticator (2FAS).

    • Ente Auth is Free and Open Source2FA Authenticator (2FAS) is also Free and Open Source
    • Ente Auth is Security-focused2FA Authenticator (2FAS) is not according to our users
  2. Proton Authenticator icon

    Proton Authenticator

     82 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.

    62 Proton Authenticator alternatives

    Cost / License

    Application type

    Platforms

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

    Authenticator Extension

     19 likes

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

    58 Authenticator Extension alternatives

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Microsoft Edge
    • Google Chrome
    • Mozilla Firefox
    Authenticator Extension screenshot 1
     
  5. Ad
    Screenshot
    Nitrokey icon
    Nitrokey

    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 protect...

    https://www.nitrokey.com
    Learn More
  6. Nitrokey icon

    Nitrokey

     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.

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    Nitrokey screenshot 1
     
  7. Keysmith icon

    Keysmith

     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).

    80 Keysmith alternatives

    Cost / License

    Application type

    Platforms

    • Linux
    • KDE Plasma
    • Linux Mobile
    • Flathub
    • Plasma Mobile
    • Flatpak
    Keysmith screenshot 1
     
  8. OTPClient icon

    OTPClient

     6 likes

    GTK+ application for securely managing TOTP & HOTP tokens. Content is encrypted on disk using AES256-GCM. Master password derived using PBKDF2 with 100k iterations & SHA512 as hash algorithm. Can import encrypted backups from andOTP & Authenticator+.

    Cost / License

    Application type

    Platforms

    • Linux
    • Flathub
    • GNOME
    Main - empty
    Add code
    Import, export, change, edit
     
  10. SoloKeys icon

    SoloKeys

     9 likes

    Solo is an open source security key, and you can get one at solokeys.com.

    Cost / License

    • Pay once
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    SoloKeys screenshot 1
     

  11. 2fa

     2 likes

    Two-factor authentication on the command line.

    Cost / License

    Platforms

    • Linux
    • Go (Programming Language)
     

  12. Hermes OTP

     2 likes

    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 (MIT)

    Platforms

    • Windows
    • Mac
    • Linux
    Hermes OTP screenshot 1
     

  13. cotp

     1 like

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

    Cost / License

    Application type

    Platforms

    • Linux
    • Homebrew
    • Mac
    • Windows
    • Rust
    cotp screenshot 1
     
  14. Clockode icon

    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

    Platforms

    • Linux
    • Mac
    • Windows
    • Flathub
    • Flatpak
    Clockode screenshot 1
    Clockode screenshot 2
     
  15. Kerveros icon

    Kerveros

     Like

    Kerveros is a robust two-factor authentication code generator that combines ease of use with enterprise-grade security. It generates time-based one-time passwords (TOTP) for your online accounts while keeping your secrets encrypted and protected.

    Cost / License

    Platforms

    • Linux
    • Flathub
    • Flatpak
    Kerveros screenshot 1
     
12 of 12 2FA Authenticator (2FAS) alternatives