FusionAuth

Customer identity and access management platform built for developers to integrate and self-host.

FusionAuth provides authentication, authorization, and user management for customer-facing applications, with an API-first design that developers can run anywhere: self-hosted or in FusionAuth's cloud. It covers login, SSO, MFA, and passwordless flows without per-user pricing surprises. Founded in 2009, it competes with hosted-only CIAM providers on control and flexibility.

Category: Identity & Access
Founded: 2009
Funding: $65M raised (Venture Round, 2023)
Website: https://fusionauth.io

Seen at Black Hat USA 2026 (Silver sponsor, booth 5642).

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