FusionAuth provides a self-hostable customer identity and access management (CIAM) platform designed for organizations that need control over their authentication infrastructure. The platform supports multiple deployment models - download, self-hosted, or on dedicated cloud infrastructure - allowing customers to avoid vendor lock-in while maintaining data sovereignty. Over 7,000 organizations use FusionAuth to manage user authentication and access.
The platform handles standard authentication requirements including password login, social logins, and single sign-on, alongside more advanced capabilities such as multi-factor authentication, biometric authentication with passkeys, and passwordless login options. Its single-tenant architecture ensures data isolation, and it provides comprehensive user provisioning and management tools along with security monitoring and threat detection features.
FusionAuth has been recognized among Inc. 5000's fastest-growing private companies. The platform supports over 10 SDK languages, enabling integration across diverse technology stacks. New deployments can be operational in under five minutes. The company has established particular traction in fintech and healthcare, sectors where data control and compliance requirements are paramount.
