Built for Devs, by Devs

FusionAuth is the customer authentication and authorization platform that makes developers' lives awesome. You'll get all the features your app needs plus a customizable, scalable solution you can run on any computer, anywhere in the world.

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fusionauth nucleus
authentication & authorization

FusionAuth adds login, registration, SSO, MFA, and a bazillion other features to your app in days – not months.

mobile phone login, integration and framworks

Kick the Tires & Build Your Own Instance

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FusionAuth can be hosted anywhere providing flexibility for you to choose the deployment method that best suits your infrastructure requirements.


Host it offline, from your cloud, on-prem, or from under your desk – wherever.

FusionAuth Cloud

Global cloud locations for high performance, high availability, and data sovereignty with up to 99.99% SLA. 

Any Platform
Any Framework

Install FusionAuth anywhere and integrate
with anything in minutes.