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FusionAuth

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 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 Score based on 1840 reference ratings
4.8/5.0 (1840)
  • Fall 2025 Top Performer Passwordless Authentication Software
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40Testimonials

  • "[Using FusionAuth] meant that we could save on development costs, and bring an overall improvement to the customer experience in a much shorter time frame [than developing the functionality ourselves]."

    Brad Kite Chief Technology Officer

  • "[H]aving FusionAuth running on our infrastructure makes us more confident."

    Danilo Polani Senior Software Engineer

  • "[FusionAuth] has saved us from having to build our own middleware on top of Cognito, or drop $$$ on something like Auth0 or Okta."

    Whitney Champion Lead Architect
39 more testimonials currently locked

35 Case Studies

  • UrbanSitter Speeds B2B Growth and Cuts Auth Dev Time by 90% with …

    Lucas Whitman Chief Technology Officer

  • CurrentDesk Saved Thousands Of Dollars By Choosing FusionAuth

    Brittany Roddy Architect

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

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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.

FeaturedCustomers has 2,116,958+ validated customer references including reviews, case studies, success stories, customer stories, testimonials and customer videos that will help you make better software purchasing decisions.