Auth0 vs FusionAuth
On the evidence we track, Auth0 leads this comparison with a composite score of 89/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.
Capabilities
Feature-by-feature on the axes that matter for auth & identity software. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
Auth0
LeaderA managed authentication service that handles user identity verification, single sign-on, and API security. Supports passwordless login, multi-factor authentication, role-based access control, and machine-to-machine authentication with enterprise-grade features for compliance and security.
FusionAuth
FusionAuth is an identity and access management solution providing comprehensive authentication capabilities including social login, passwordless authentication, multi-factor authentication, and single sign-on. It supports self-hosted, cloud, and hybrid deployment models with transparent, predictable pricing and full API-first integration.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
Auth0
LeaderFree tier up to 25k MAU, then $35–$240/month. Pricing based on monthly active users.
- FreeFree
- 1 Custom Domain
- Passwordless Authentication
- Unlimited Social Connections
- 5 Organizations
- Brand Customization
- +5 more
- Essentials$35/month, up to 500 monthly active users
- Everything in Free
- Higher Auth and API limits
- Pro Multi-Factor Authentication
- Role-based Access Control per Organization
- 10 Organizations
- +3 more
- Professional$240/month, up to 500 monthly active users
- Everything in Essentials
- Use existing User Database for Logins
- Enterprise Multi-Factor Authentication
- Enhanced Attack Protection
- Machine-to-Machine Tokens
- EnterpriseContact sales
- Everything in Professional
- Custom User & SSO Tiers
- 99.99% SLA
- Enterprise Rate Limits
- Enterprise Administration & Support
- +1 more
FusionAuth
Free self-hosted Community edition. Paid cloud plans from $162/mo for Starter.
- CommunityFree
- Core authentication standards and features
- Community support via forums, Slack, and GitHub
- Self-hosted deployment
- Starter$162/mo when billed annually
- Premium authentication features
- Advanced MFA methods
- Application theming
- Breached password detection
- Machine-to-machine authentication
- +1 more
- EssentialsStarting at $2,970/mo billed annually
- Advanced connectivity, MFA, and security features
- Custom OAuth scopes
- Email support with 24-48 hour response during business hours
- Business hosting included
- EnterpriseContact sales
- All Essentials features
- Advanced threat detection
- SSO tenant manager
- 24/7 phone and email support
- Private Slack channel with contract
- +2 more
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
Auth0
Leader- Datadog
- Splunk
- AWS
- Azure
- Slack
- Segment
- Salesforce
- Tealium
- Web3Auth
- Spruce ID
- Unstoppable Domains
- Dock.io
- Ethereum Name Service
- NFT services
FusionAuth
- LDAP
- Legacy database systems
- Kafka
- Custom APIs
- Webhooks
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.