Secure, powerful, and flexible auth that developers love.
FusionAuth adds login, registration, SSO, MFA, and a bazillion other features to your app in days - not months.
Offer your users flexible authentication options, including passwords, passwordless, single sign-on (SSO), and multi-factor authentication (MFA). FusionAuth supports standards-based protocols like OAuth2, OIDC, and SAML v2 for secure and seamless login experiences.
Streamline access, reduce password fatigue, and simplify user management while maintaining robust authentication with single sign-on.
Enhance security by eliminating password hassles such as forgetting, creating strong passwords, or frequent resets.
Improve account security by requiring additional verification, making it much harder for unauthorized users to gain access even if passwords are compromised. Safeguard sensitive data and reduce the risk of account takeovers.
Implement fine-grained access control, protect sensitive data, and make sure that only authenticated users with proper permissions can interact with your APIs. Scale securely while maintaining developer productivity.
Easily define and manage user roles, assign specific permissions, and ensure users can only access the features and data they need. Streamline security while enhancing user experience.
Seamless user authentication across multiple devices. Control session lifetimes, and easily revoke access when needed.
Keep those sensitive actions secure without compromising user experience. Step Up Auth lets you require additional verification, but only when needed. Protect high-risk operations without annoying users doing routine tasks.
Give your admins and support team superpowers with FusionAuth’s intuitive user management interface. Quickly search, sort, and manage user accounts, leading to better support efficiency.
Enhance user profiles and streamline data updates without writing any code. Keep your application flexible and user-centric with FusionAuth’s customizable admin forms.
Complex relationships? Fine-grained permissions?Seamless machine-to-machine interactions? FusionAuth’s Entity Management makes it easy to manage and scale large volumes of diverse Entities.
Empower users to securely manage their own accounts, including multi-factor authentication (MFA), updating personal information, and resetting passwords.
Detect and respond to sophisticated threats in real-time with customizable rate limiting, CAPTCHA integration, and location-aware security. Enhance security and safeguard user data while getting alerted when it matters most.
Protect your users and systems from compromised credentials. Compare passwords against a vast database of known leaks.
Ensure regulatory compliance and robust security with FusionAuth. Our SOC 2 Type 2 certification, regular security audits, and comprehensive data protection measures help you meet industry standards and safeguard your user data.
Enhance security and simplify compliance with FusionAuth's single-tenant architecture. Your data remains isolated, giving you full control over deployment, customization, and data sovereignty. Scale effortlessly with strict data separation.
Save months of development cycles by using FusionAuth for all your auth needs.
Built with a security-first mindset - giving you the freedom to accelerate your products and never worry about the next compliance or security requirement.
Scalable and reliable infrastructure that supports one user logging in -- or thousands at once.
API-first and fully customizable so your developers will love us.
From securing patient data in healthcare to enhancing user experiences in gaming and streamlining retail operations, our versatile platform meets your unique challenges.
Step-by-step guides to quickly integrate FusionAuth into your application.
start buildingLogins/sec Supported
Uptime SLA
Engineer-led Support
FusionAuth can be hosted anywhere providing flexibility for you to choose the deployment method that best suits your infrastructure requirements.
free downloadTrusted by 15 Million Developers
This update brings passkeys to the free Community Edition of FusionAuth, enhancing security for everyone.
Get a deep-dive into OAuth2 from a practical, real-world perspective. Learn the use cases and implementation scenarios developers commonly encounter.
