FusionAuth

FusionAuth is a complete authentication system that manages who can access your application and what they can do. You can install it on your own computer, your company servers, or use their cloud service. This flexibility makes it different from most authentication tools that force you to use only their cloud.

The platform supports all modern login methods - traditional passwords, passwordless access, social media logins, and biometric authentication like fingerprints. It follows industry standards like OAuth2, OpenID Connect, and SAML, meaning it works smoothly with other software.

There is a free version with all core features, and paid plans add extra security, support, and cloud hosting. The free version has no user limits, making it suitable for projects of any size.

• Password and passwordless authentication options

• Social login integration (Google, Facebook, Apple, LinkedIn)

• Single sign-on across applications

• Multi-factor authentication and biometric support

• Breached password detection

• User registration and profile management

• Role-based permissions and access control

• REST APIs and SDK libraries

• Self-hosted or cloud deployment

• Customizable login pages and email templates