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Understand the differences before you shortlist.

Auth0×

FusionAuth×

Attribute	Auth0Other license	FusionAuthOther license
Overview
Primary focus	Customer identity and access management platform, now part of Okta	Self-hostable, developer-first customer identity platform
Deployment	Web	Self-hosted
Source model	Other license	Other license
Pricing model	freemium	freemium
API available	Yes	Yes
Windows desktop	Not specified	Not specified
Mobile app	Yes	Not specified
Overview	Auth0 provides authentication and customer identity management (login, MFA, SSO, user management) via SDKs and APIs. Okta acquired Auth0 in 2021, and it now operates as the Auth0 Platform alongside Okta's workforce-identity products.	FusionAuth is a downloadable CIAM server with a free, unlimited-user Community edition, offering OAuth2/OIDC/SAML, MFA and passwordless login for any language or stack.
Explore further
Vendor website	Visit vendor ↗	Visit vendor ↗
ITHub profile	View full profile →	View full profile →

Primary focus: Customer identity and access management platform, now part of Okta
Deployment: Web
Source model: Other license
Pricing model: freemium
API available: Yes
Windows desktop: Not specified
Mobile app: Yes
Overview: Auth0 provides authentication and customer identity management (login, MFA, SSO, user management) via SDKs and APIs. Okta acquired Auth0 in 2021, and it now operates as the Auth0 Platform alongside Okta's workforce-identity products.

Primary focus: Self-hostable, developer-first customer identity platform
Deployment: Self-hosted
Source model: Other license
Pricing model: freemium
API available: Yes
Windows desktop: Not specified
Mobile app: Not specified
Overview: FusionAuth is a downloadable CIAM server with a free, unlimited-user Community edition, offering OAuth2/OIDC/SAML, MFA and passwordless login for any language or stack.

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