FusionAuth is the authentication and authorization platform engineered for developers who demand flexibility and control. Built from the ground up to integrate with any stack, every feature — from user registration to MFA and SSO — is exposed via a modern, well-documented API.
Support for every major identity protocol is included out of the box: OIDC, SAML, OAuth2, JWT, passwordless login, social sign-on, and more. Whether you’re building a greenfield app or retrofitting auth into a legacy system, FusionAuth adapts to your use case — not the other way around.
Need compliance? FusionAuth helps you meet GDPR, HIPAA, and COPPA standards quickly and reliably.
Deploy it your way: install on Linux, Windows, macOS, Docker, or Kubernetes — or go with FusionAuth Cloud, our managed SaaS hosting. No black boxes. No vendor lock-in. Just powerful, customizable auth that works the way you do.
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Auth0 takes a modern approach to Identity and enables organizations to provide secure access to any application, for any user. Auth0 is highly customizable, and simple yet flexible. Safeguarding billions of login transactions each month, Auth0 delivers convenience, privacy, and security so customers can focus on innovation.
With Auth0, you can rapidly integrate authentication and authorization for web, mobile, and legacy applications, with new Fine Grained Authorization (FGA) that goes beyond role-based access control.
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Curity
Curity's identity server serves as a comprehensive platform for identity and API security that adheres to established standards, aimed at delivering strong authentication and authorization for various digital services. By integrating identity security with API security, it facilitates efficient customer identity and access management, thereby promoting digital transformation, fostering growth, and enhancing customer loyalty. The platform boasts an array of features, such as multi-factor authentication, user journey orchestration, decentralized identity, and secure access management. It is compatible with several identity-related standards, including OAuth, OpenID Connect, and SCIM, which helps ensure both interoperability and adherence to industry norms. The architecture of Curity is grounded in the principle of separating concerns, which significantly improves security, flexibility, and scalability. Additionally, it offers sophisticated configuration management capabilities, allowing for transaction-based changes, rollbacks, and backups, all of which can be managed through a user-friendly web interface, command-line interface, RESTCONF API, and XML configuration files. With these diverse tools and features, the Curity identity server stands out as a vital solution for organizations looking to enhance their digital security landscape.
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FortiTrust Identity
FortiTrust Identity offers a cloud-based subscription service that streamlines identity and access management within complex enterprise hybrid environments. This solution, known as FortiTrust Identity (FTI), is seamlessly integrated with the Fortinet Security Fabric, providing a comprehensive array of security measures alongside centralized management of user authentications, which encompasses multi-factor authentication. By adopting FTI, organizations can embark on their zero-trust strategy, ensuring reliable user verification and robust authentication while maintaining a user-friendly experience. The platform supports various authentication methods, including adaptive, multi-factor, and passwordless options, as well as identity federation for single sign-on (SSO) across the hybrid environment, all facilitated through user-based licensing. It is crucial to guarantee that only authorized individuals have access to sensitive data, resources, and applications throughout the enterprise. Enhancing user identity assurance through the incorporation of additional verification factors and adaptive authentication techniques is vital for maintaining security integrity. As organizations increasingly pivot to digital frameworks, implementing such strategies will be essential for safeguarding their assets.
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