Auth0 vs FusionAuth: Features, Pricing and User Reviews 2026
Auth0
Secure Authentication & User Login Platform by Okta
FusionAuth
Developer Authentication Platform
Auth0
Secure Authentication & User Login Platform by Okta
FusionAuth
Developer Authentication Platform
What are Auth0 and FusionAuth?
Auth0 is an identity and access management platform that handles user authentication and authorization for web and mobile applications. It works as a service that sits between your application and your users, managing who can access what.
The platform supports many login types including traditional passwords, social media accounts like Google or Facebook, fingerprint recognition, and one-time codes. It also provides single sign-on, which lets users log into multiple apps with one set of credentials.
Auth0 handles security requirements like checking for breached passwords, blocking suspicious login attempts, and verifying user identity through multiple factors. Developers can set it up quickly using ready-made tools and code libraries, saving months of development time and reducing security risks.
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.
Features of Auth0 and FusionAuth
Secure authentication for web and mobile apps
Social login with 30+ providers
Multi-factor authentication options
Single sign-on capabilities
Passwordless login methods
Custom branding for login pages
Attack protection and security monitoring
User profile management
Role-based access control
API security
Enterprise directory integration
Real-time security alerts
Detailed activity logs
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
Use Cases of Auth0 and FusionAuth
Pricing of Auth0 and FusionAuth
Auth0 offers flexible pricing for different business needs with separate plans for consumer-facing applications and business software.
For B2C Applications (Business to Consumer), the Free plan supports up to 25,000 monthly active users with basic features. The Essentials plan costs $35 monthly for 500 users and includes multi-factor authentication and better limits. The Professional plan is $240 monthly for 1,000 users with advanced security features. Enterprise plans offer custom pricing with dedicated support and guaranteed uptime.
For B2B Applications (Business to Business), pricing starts higher. The Free plan includes the same 25,000 users. Essentials costs $150 monthly, Professional is $800 monthly, and Enterprise plans are available with custom pricing. All paid plans can be billed monthly or yearly, with yearly billing offering one month free.
FusionAuth offers flexible pricing to match different needs and deployment preferences.
Self-Hosted is completely free with unlimited users. Download and run FusionAuth on your own infrastructure with no ongoing costs. You get all core authentication features, making it perfect for development, testing, and production environments where you want full control.
Basic Plan starts at $37 per month and provides a single cloud server instance, ideal for development and testing environments. It includes one custom domain and basic cloud hosting.
Business Plan costs $225 per month and offers a dedicated server with nightly backups, availability across multiple zones, and support for up to five custom domains. This plan suits most production applications.
High Availability Plan begins at $500 per month with redundant servers, configurable backups, and up to 99.99% uptime guarantee with the Enterprise support plan. This includes 20 custom domains and deployment in any AWS region.
FAQs: Auth0 vs FusionAuth
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