--- title: "FusionAuth — Self-Hosted & Flexible Authentication Platform" description: "Independent review of FusionAuth. Compare self-hosted vs. cloud deployment, authentication features, pricing model, and top alternatives. See when…" lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "SoftwareApplication", "name": "FusionAuth", "applicationCategory": "SecurityApplication", "applicationSubCategory": "Customer Identity / CIAM", "url": "https://fusionauth.io", "description": "FusionAuth differentiates itself from pure SaaS CIAM platforms by offering true deployment flexibility: organizations can run FusionAuth on their own infrastructure, in a private cloud, or use FusionAuth Cloud (managed). The community edition is free and source-available for self-hosted deployments. FusionAuth's feature set is comprehensive: SSO, MFA (TOTP, WebAuthn/passkeys, magic links, SMS), SAML 2.0, OIDC, LDAP, SCIM, multi-tenancy, and entity management (for non-human identities). Pricing is not MAU-based at the self-hosted tier, which makes it attractive for applications with large or spiky user bases. Verify current licensing and pricing at fusionauth.io.", "offers": { "@type": "Offer", "category": "Free for self-hosted Community Edition; cloud and enterprise tiers by deployment/support" }, "dateModified": "2026-05-31T13:32:15.631476+00:00" }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "What is FusionAuth?", "acceptedAnswer": { "@type": "Answer", "text": "FusionAuth differentiates itself from pure SaaS CIAM platforms by offering true deployment flexibility: organizations can run FusionAuth on their own infrastructure, in a private cloud, or use FusionAuth Cloud (managed). The community edition is free and source-available for self-hosted deployments. FusionAuth's feature set is comprehensive: SSO, MFA (TOTP, WebAuthn/passkeys, magic links, SMS), SAML 2.0, OIDC, LDAP, SCIM, multi-tenancy, and entity management (for non-human identities). Pricing is not MAU-based at the self-hosted tier, which makes it attractive for applications with large or spiky user bases. Verify current licensing and pricing at fusionauth.io." } }, { "@type": "Question", "name": "Who is FusionAuth best for?", "acceptedAnswer": { "@type": "Answer", "text": "Organizations that want deployment flexibility (self-hosted option), comprehensive authentication features without MAU-based pricing at scale, and a developer-friendly API. Particularly relevant for companies in regulated industries with data residency requirements, gaming companies with large user bases, or teams that prefer open source-adjacent infrastructure." } } ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://idsync.com/" }, { "@type": "ListItem", "position": 2, "name": "Directory", "item": "https://idsync.com/directory" }, { "@type": "ListItem", "position": 3, "name": "Customer Identity / CIAM", "item": "https://idsync.com/directory/category/ciam" }, { "@type": "ListItem", "position": 4, "name": "FusionAuth", "item": "https://idsync.com/directory/fusionauth" } ] } ] --- [![IDSync — identity software buyer platform](/assets/idsync-logo-BKS89EW4.png)](/) [Directory](/directory) [Compare](/compare) [Resources](/resources) [Browse tools](/directory)[Run Stack Finder](/stack-finder) 1. [Home](/) 2. [Directory](/directory) 3. [Customer Identity / CIAM](/directory/category/ciam) 4. FusionAuth ![FusionAuth company logo](https://www.google.com/s2/favicons?sz=128&domain=fusionauth.io) # FusionAuth FusionAuth is a comprehensive authentication and user management platform offering flexible deployment (self-hosted, private cloud, or FusionAuth Cloud), developer-friendly APIs, and broad feature coverage including SSO, MFA, SAML, OIDC, and multi-tenancy. Last updated 3 months ago [Visit site](https://fusionauth.io) Quick answer ## What is FusionAuth? Short answer FusionAuth differentiates itself from pure SaaS CIAM platforms by offering true deployment flexibility: organizations can run FusionAuth on their own infrastructure, in a private cloud, or use FusionAuth Cloud (managed). The community edition is free and source-available for self-hosted deployments. FusionAuth's feature set is comprehensive: SSO, MFA (TOTP, WebAuthn/passkeys, magic links, SMS), SAML 2.0, OIDC, LDAP, SCIM, multi-tenancy, and entity management (for non-human identities). Pricing is not MAU-based at the self-hosted tier, which makes it attractive for applications with large or spiky user bases. Verify current licensing and pricing at fusionauth.io. Best for Organizations that want deployment flexibility (self-hosted option), comprehensive authentication features without MAU-based pricing at scale, and a developer-friendly API. Particularly relevant for companies in regulated industries with data residency requirements, gaming companies with large user bases, or teams that prefer open source-adjacent infrastructure. When to choose Choose FusionAuth when deployment flexibility is a priority (self-hosting required or preferred), MAU-based pricing is a concern at your user scale, you need entity management for non-human identities, or you want a comprehensive feature set without the operational complexity of Keycloak. When not to choose Avoid FusionAuth if you want best-in-class pre-built React/Next.js UI components (use Clerk), the absolute largest open source community (use Keycloak), or a platform with deeper enterprise IGA capabilities. Related tools & categories [Customer Identity / CIAM](/directory/category/ciam)[SSO](/directory/category/sso)[MFA / Passwordless](/directory/category/mfa)[Zitadel](/directory/zitadel)[Auth0](/directory/auth0)[Run the IAM Stack Finder](/stack-finder)[Report: The State of AI Agent Identity 2026](/reports/state-of-ai-agent-identity-2026) ## Categories [Customer Identity / CIAM ★](/directory/category/ciam)[SSO](/directory/category/sso)[MFA / Passwordless](/directory/category/mfa)[Developer Authentication](/directory/category/developer-auth) ## Common use cases - Self-hosted authentication for organizations with data residency or compliance requirements - Multi-tenant application architecture with application-level isolation - Gaming platform authentication with high-volume, spiky user activity - SSO and MFA for both employee and customer-facing applications - Entity management for non-human identities (IoT devices, machine accounts) - SAML and OIDC SSO for enterprise customers of SaaS products ## Strengths - True deployment flexibility: self-hosted, private cloud, or managed — rare in this category - Non-MAU-based pricing for self-hosted tier is predictable at any user scale - Comprehensive feature set: SSO, MFA, SAML, OIDC, SCIM, multi-tenancy, entity management - Entity management for non-human identities is a distinctive capability - Developer-friendly API with SDKs for major languages - Active community and responsive support on community forums ## Limitations & considerations - Self-hosting requires engineering capacity for deployment, maintenance, and security patching - Pre-built UI components are not as polished as Clerk's in React/Next.js environments - Community edition is source-available, not fully open source (verify current license terms at fusionauth.io) - Smaller community ecosystem than Auth0 or Keycloak - Advanced enterprise governance features are not FusionAuth's primary strength ## Pricing model summary FusionAuth Community Edition is free to self-host (verify source-available license terms). FusionAuth Cloud (managed) and Enterprise tiers are priced based on deployment model and support level rather than MAU count. Verify current pricing at fusionauth.io/pricing. [View vendor pricing page ↗](https://fusionauth.io/pricing) ## Integrations Google Apple GitHub Facebook LDAP Active Directory Salesforce Twilio ## Fit Company size Startup, Mid-market, Enterprise Deployment Self-hosted, Private Cloud, SaaS / Cloud-hosted (FusionAuth Cloud) Source Source-available (Community Edition); verify current license at fusionauth.io Pricing model Free for self-hosted Community Edition; cloud and enterprise tiers by deployment/support ## Alternatives & comparisons [Zitadel](/directory/zitadel) Open source identity and access platform with built-in multi-tenancy, SSO, MFA and a managed Zitadel Cloud SaaS. [Compare FusionAuth vs Zitadel →](/compare/fusionauth-vs-zitadel) [Auth0](/directory/auth0) Auth0 is a developer-centric customer identity and access management (CIAM) platform offering authentication, authorization, and user management for web and mobile applications, now operating as Okta Customer Identity Cloud. [Compare FusionAuth vs Auth0 →](/compare/fusionauth-vs-auth0) [Clerk](/directory/clerk) Clerk provides drop-in authentication UI components and a complete user management platform for React, Next.js, and modern web applications, including B2B organization management and enterprise SSO. [Compare FusionAuth vs Clerk →](/compare/fusionauth-vs-clerk) [Keycloak](/directory/keycloak) Keycloak is the most widely deployed open source IAM platform, providing enterprise-grade SSO, MFA, SAML, OIDC, LDAP, and Kerberos support in a self-hosted, Apache 2.0 licensed package maintained by Red Hat. [Compare FusionAuth vs Keycloak →](/compare/fusionauth-vs-keycloak) IDSync provides educational buyer guidance based on publicly available information, editorial review, and user-submitted data. Vendor information should be verified before purchase. [Who we are, our methodology & disclosure policy](/about). FusionAuth and its logo are trademarks of their respective owner. IDSync is an independent buyer resource and does not imply endorsement unless explicitly stated. ### Take action [Request vendor shortlist](/request-shortlist)[Run the IAM Stack Finder](/stack-finder)[Request vendor intro](/contact)[Docs ↗](https://fusionauth.io/docs/)[Pricing ↗](https://fusionauth.io/pricing) ### Work at FusionAuth? Claim this profile to keep it current. 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