Every application needs customer authentication, but building it demands specialized expertise. 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. For technical leaders creating products for external users, FusionAuth tames the risk and complexity that comes with typical identity systems. With self-hosted or cloud options, extensive documentation, a free plan, and a no-hassle process, FusionAuth helps developers meet authentication feature and compliance requirements so they can focus on building their application.