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Multi-Factor Authentication Resources

Directories, guides, and tools that help users identify services supporting multi-factor authentication and implement stronger security practices across platforms.

12 projects

9,984 contributors

$122M

Authelia

Authelia is an open-source authentication and authorization server providing single sign-on (SSO) and 2-factor authentication for web applications. It acts as a portal to secure applications by verifying user identities and controlling access through various authentication methods.

Contributors

2,162

Organizations

453

Software value

$8.8M

Ory Kratos

Ory Kratos is an open-source identity and user management system that provides secure authentication, registration, and user management capabilities. It offers features like multi-factor authentication, password recovery, profile management, and identity verification while maintaining compliance with security best practices.

Contributors

1,808

Organizations

601

Software value

$11M

WSO2 Identity Server

WSO2 Identity Server is an open-source identity and access management (IAM) solution that enables organizations to manage user identities, secure access to applications and APIs, and implement strong authentication and authorization. It provides features like single sign-on (SSO), multi-factor authentication, identity federation, and compliance with security standards.

Contributors

1,725

Organizations

126

Software value

$20M

Casdoor

Casdoor is an open-source Identity and Access Management (IAM) and Single Sign-On (SSO) platform that provides centralized authentication, authorization, and user management capabilities. It supports multiple authentication protocols, social login providers, and offers features like user management, permission control, and organization management.

Contributors

1,295

Organizations

283

Software value

$4.5M

Central Authentication Service (CAS)

CAS (Central Authentication Service) is an enterprise single sign-on solution for web applications. It implements a secure single sign-on protocol that allows users to access multiple applications while providing their credentials only once, supporting various authentication mechanisms and integrations with external identity providers.

Contributors

1,048

Organizations

128

Software value

$21M

Login.gov Identity Provider (IdP)

Login.gov Identity Provider (IdP) is a secure authentication and identity verification system that provides single sign-on capabilities for accessing multiple U.S. government services. It implements strong authentication protocols and identity proofing to ensure secure access to federal applications while protecting user privacy.

Contributors

604

Organizations

88

Software value

$18M

Two Factor Totp

Two Factor TOTP is a two-factor authentication provider for Nextcloud that implements time-based one-time passwords (TOTP). It enables users to add an additional security layer to their Nextcloud accounts by requiring a temporary code generated by authenticator apps like Google Authenticator or Authy.

Contributors

504

Organizations

83

Software value

$231K

scheb/2fa

A PHP library that provides two-factor authentication (2FA) functionality for web applications, supporting various authentication methods like Google Authenticator, TOTP, email codes and backup codes

Contributors

320

Organizations

76

Software value

$656K

LinOTP

LinOTP is an open source two-factor authentication solution that implements one-time password authentication. It provides a modular authentication system supporting various token types and allows for flexible integration with existing user management systems.

Contributors

253

Organizations

33

Software value

$6M

WebAuthn Library

A Go library that implements the WebAuthn (Web Authentication) specification, enabling passwordless authentication and second-factor authentication using security keys, biometrics, and other authenticators in web applications

Contributors

149

Organizations

51

Software value

$380K

Authgear

Authgear is an open-source authentication and user management platform that provides features like passwordless authentication, social login, multi-factor authentication (MFA), and user profile management. It helps developers implement secure authentication flows and user identity management in their applications.

Contributors

116

Organizations

13

Software value

$31M

Two Factor Auth List

List of sites with two factor auth support which includes SMS, email, phone calls, hardware, and software.

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