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Twofactorauth

github.com/2factorauth/twofactorauth Password Managers Open-source projectFree

The 2FA Directory lists websites and services that support two-factor authentication, including options such as SMS, email, calls, and security keys.

Visit Twofactorauth 24 alternatives
github.com/2factorauth/twofactorauth
Twofactorauth homepage screenshot

About Twofactorauth

This GitHub repository holds the data behind the 2FA Directory, a list of websites and services that support two-factor authentication (2FA). The list covers SMS, email, phone call, hardware, and software options. The directory is viewed at 2fa.directory, where users can browse by category or search for a specific website.

The repository also offers an API for accessing the data. The maintainers recommend the API over scraping the repository directly, because changes to the repository may break programs that rely on it. API access is provided free of charge, but distributing the data requires attribution under the project's license. Commercial users are asked to consider sponsoring the project. The project accepts community contributions, and contributors are asked to read CONTRIBUTING.md first. The website's own code is in a separate repository.

The source describes the project as a list of 2FA support, not as a tool for storing or managing passwords. Its category is listed as password managers, but the source material does not describe any password management features.

Key features

  • Lists websites and services that support two-factor authentication
  • Covers SMS, email, phone call, hardware, and software 2FA options
  • Provides an API for accessing directory data
  • Accepts community contributions guided by CONTRIBUTING.md
  • Browse by category or search for a specific website at 2fa.directory
Best for: Developers who need programmatic access to 2FA support data, and people who want to check which websites offer two-factor authentication before choosing a service.
Good for
  • API access is provided free of charge
  • The maintainers recommend a documented API over scraping the repository
  • Community contributions are guided by published contribution guidelines
Watch out for
  • Changes to the repository may break programs that scrape it directly
  • Distributing the data requires attribution under the project's license
  • The source does not describe password management features

Twofactorauth at a glance

Type
Open-source project
Pricing
Free
Open source
Not stated
Language
English
Last checked
Oct 6, 2026 · Online when checked
Listed
Oct 5, 2026
apigitsecuritypassword management

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Twofactorauth FAQ

Is API access to the directory data free?
The source says API access is provided free of charge. Distributing the data requires proper attribution under the project's license.
Should I scrape the data directly from the repository?
The maintainers discourage scraping the Git repository directly, because changes they make may break programs. They recommend using the API instead.
How can I contribute to the list?
Contributions are welcome. Contributors should read all the guidelines in CONTRIBUTING.md before starting.
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Listing maintained by Chris McClure and the WebIndexly editors · Updated Oct 12, 2026 · How we rank