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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 1530 reference ratings
4.8/5.0 (1530)
  • Top Performer 2025 2025
    Fall 2025Top PerformerPasswordless Authentication Software

40Testimonials

  • "It's a huge win for us that we can self-host FusionAuth. Not only do we have extremely low latency for API calls, but also no rate limits. We were previously with Auth0 and their APIs and UIs were rate limited. This often made them horrifically slow."

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35 Case Studies

  • DolphinVC chose FusionAuth because it saved them time and they could run it wherever they wanted

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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.