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.
"it’s very attractive for early-stage startups when they need to reduce cost of tools and services but are still able to switch to paid plans later if they need more features and support."




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.