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Read 40 FusionAuth reviews and testimonials from customers, explore 35 case studies and customer success stories, and watch customer videos to see why companies chose FusionAuth as their Passwordless Authentication Software

FusionAuth is a single-tenant CIAM solution that deploys on-premises, in your private cloud, or on their fully-managed FusionAuth Cloud. Their JSON REST API provides advanced identity management that is easy for developers to deploy and implement on any platform or framework.

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Customer Rating Review Scorebased on 1481 reference ratings
4.8/5.0 (1481)
  • Top Performer 2025 2025
    Fall 2025Top PerformerPasswordless Authentication Software

40Testimonials

  • “We have complex needs in that we’re a multi-sided, multi-tenant enterprise SaaS platform and need to support customer specific identity providers for SSO. We also require end-to-end authentication across different applications, microservices, and APIs. FusionAuth’s flexible multi-tenant architecture and first-class developer experience enabled us to unify all of this in short order, and made it simpler than others to do so.”

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35 Case Studies

  • ZanoCloud Helps Companies Make The Most Of The Cloud With FusionAuth

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Additional FusionAuth Information & Resources

Read FusionAuth Reviews, Testimonials & Customer References from 40 real FusionAuth customers.

Browse FusionAuth Case Studies, Customer Success Stories, & Customer References from 35 businesses that use FusionAuth.