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Top 6 open-source products relevant to Authentication, Multi-factor Authentication, and Two Factor Authentication

  1. FusionAuth is a CIAM platform that is 100% free for unlimited users.

    Open Source freemium

    /fusionauth-alternatives
  2. Secure login made open and easy ๐Ÿ”’.

    Open Source

    /solokeys-alternatives
  3. Email Encryption. Encrypt your emails with GnuPG, OpenPGP, S/MIME or your favourite email client.

    Open Source

    /nitrokey-alternatives
  4. Simply Strong Two-Factor Authentication LoginTC is best in class. Effortless Administration. Intuitive User Experience. Cost-effective solution for all organizations.

    Open Source freemium $3.0 / Monthly (Professional Tier)

    /logintc-alternatives
  5. privacyIDEA is an enterprise ready, open-source multi factor authentication system.

    Open Source

    /privacyidea-alternatives
  6. Authgear offers developers a simple, secure, and scalable Authentication and User Management Solution for web and mobile apps.

    Open Source freemium

    /authgear-alternatives

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