FusionAuth builds software for developers needing to add authentication to their software products. It's a big problem - every application needs authentication, but building it yourself is a complex distraction. We distribute our free Community software through word-of-mouth reputation to software developers worldwide. We nurture and support the software development communities, taking their input to give "Devs" the features they need for secure and convenient Customer Identity and Access Management. And we've built a fast growing business by offering paid plans and hosting with higher end features and support.

It's Product Led Growth at its best. Start with the free version, then when your business depends on customers logging into your application, upgrade to our full featured plans. Over 3,000 companies already have..