Alternatives to FusionAuth
Self-hostable or cloud auth platform with a free-to-self-host community edition
FusionAuth ranks #1 of 12 in Authentication & identity providers, with an Alt Score of 93. It is proprietary, freemium from $162/mo and available on Windows, macOS, Linux and Web. 12 of 12 checklist rows are verified against a public source.
FusionAuth is a developer-focused authentication and user management platform that can be self-hosted for free (Community Edition) or run as a managed cloud service. It supports OAuth2/OIDC/SAML, MFA, passwordless, and enterprise SSO, and is popular with teams that want full control over data residency and deployment. It differentiates from Auth0/Clerk by prioritizing self-hosting and infrastructure ownership as first-class options.
FusionAuth is aimed at developers and engineering teams building customer identity and access management (CIAM) into web, mobile, and B2B SaaS applications who want to self-host their auth server or run it in a dedicated cloud instance rather than use a fully multi-tenant hosted IdP.
A CIAM server that provides login, registration, social login, passwordless (passkeys, magic links, one-time codes), MFA, single sign-on, role-based access control, and multi-tenant Organizations, delivered via a REST API, an admin UI, and themeable hosted login pages. Higher plans add SAML/OIDC enterprise identity providers, SCIM provisioning, advanced threat detection, and support SLAs.
FusionAuth runs as a Java-based application bundle (fusionauth-app) that you install on your own Linux, macOS, or Windows server, in Docker/Kubernetes, or run as a single-tenant instance in FusionAuth Cloud; applications integrate against it using OAuth 2.0/OpenID Connect, SDKs, or the API, with a Community edition free and unlimited for self-hosting and paid Starter/Essentials/Enterprise plans unlocking premium features and/or hosting.
Where FusionAuth stands out
Verified capabilities most alternatives don't have.
Why people leave FusionAuth
Dashed reasons are sourced facts; the rest are opinions. Vendors can dispute.
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Ranked alternatives
Ordered by Alt Score. Click any score to see the breakdown.
Ory is an open-source identity platform composed of modular services — Kratos for identity/authentication, Hydra for OAuth2/OIDC, and Keto for permissions — that can be self-hosted or consumed as a ma.
Zitadel is an open-source identity and access management platform, written in Go, offering OIDC/OAuth2/SAML, MFA, passwordless, and a native multi-tenant 'organizations' concept designed for SaaS prod.
Auth0 (an Okta company) is a developer-focused identity platform providing authentication, authorization, social and enterprise SSO, MFA, and user management via drop-in SDKs and a hosted login, for w.
Clerk is a developer-first authentication and user-management platform with pre-built React/Next.js UI components, social and passwordless login, passkeys, MFA, and B2B organizations, designed to add.
Frontegg is a B2B-focused identity platform that bundles authentication, tenant/org management, roles and entitlements, and a pre-built admin portal for end customers.
Stytch is a developer platform for authentication and fraud prevention, offering passwordless and passkey login, social and enterprise SSO, B2B multi-tenant auth, and device fingerprinting through API.
Descope is a customer identity and access management (CIAM) platform that lets developers build authentication journeys (social login, passwordless, MFA, passkeys) with a visual no-code/low-code flow.
WorkOS is a platform of enterprise-readiness APIs — SAML/OIDC single sign-on, SCIM directory sync, audit logs, and its AuthKit user management — that lets B2B SaaS apps add the features enterprise cus.
Keycloak is an open-source identity and access management server (a CNCF project) offering single sign-on, social and enterprise SSO, user federation, MFA, and fine-grained authorization, self-hosted.
Amazon Cognito is AWS's managed customer identity and access management service, providing user pools for sign-up/sign-in, social and enterprise SSO federation, MFA, and native passkey support, plus f.
Feature comparison
Rows come from the Authentication & identity providers checklist (16 rows). Human-verified cells only. ? means the value has not been verified.
| Authentication & identity providers checklist | FusionAuth | Ory | Zitadel | Auth0 | Clerk | Frontegg |
|---|---|---|---|---|---|---|
| Pricing model | ||||||
| Starts at | ||||||
| License | ||||||
| Platforms | ||||||
| Social login | ||||||
| Passwordless / magic links | ||||||
| Passkeys / WebAuthn | ||||||
| MFA | ||||||
| Enterprise SSO (SAML / OIDC) | ||||||
| SCIM provisioning | ||||||
| B2B org / multi-tenant | ||||||
| Self-hostable | ||||||
| Pre-built UI components | ||||||
| RBAC / permissions | ||||||
| Open source | ||||||
| Generous free tier (MAUs) |
Every fact and feature listed for FusionAuth is verified against its own pages. Each alternative is sourced on its own page.
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Platforms Windows, macOS, Linux, Web verified 2026-07-30
Also distributed via Docker/Kubernetes. FusionAuth Cloud offers it as a hosted web service; the admin console and hosted login pages are browser-based.
This guide explains how to install the FusionAuth App from a package on your own server running Linux, macOS, or Windows.
https://fusionauth.io/docs/get-started/download-and-install/fusionauth-app -
License Proprietary verified 2026-07-30
Core fusionauth-app is closed-source under the FusionAuth Customer License Agreement (see https://fusionauth.io/license). Client libraries, example apps, and docs are Apache 2.0.
At this point we have chosen a closed source model for the core product but open source many components as well.
https://fusionauth.io/license-faq -
Pricing model Freemium verified 2026-07-30
Free, unlimited self-hosted Community edition; paid Starter/Essentials/Enterprise plans add premium features and/or hosting.
FusionAuth Community is free and unlimited. It has the core authentication features.
https://fusionauth.io/pricing -
Starts at $162/mo verified 2026-07-30
Cheapest paid tier is Starter at $162/mo billed annually. Essentials and Enterprise are both listed starting at $2,970/mo (Enterprise requires contacting sales).
Starting at: $162 /mo Billed annually
https://fusionauth.io/pricing -
Status active verified 2026-07-30
Latest release shipped one month before research date (2026-07-30); release cadence has been continuous back to version 1.0.
Version 1.68.0 (Intelligent Kamfa) 30 June 2026
https://fusionauth.io/docs/release-notes -
Social login Yes verified 2026-07-30
Increase user sign-ups by enabling seamless logins with popular providers like Google, Facebook, LinkedIn, and more.
https://fusionauth.io/feature/oauth-social-login -
Passwordless / magic links Yes verified 2026-07-30
FusionAuth offers passwordless login in three flavors: passkeys, magic links, and one-time codes.
https://fusionauth.io/feature/passwordless -
Passkeys / WebAuthn Yes verified 2026-07-30
Enhance your authentication security with Passkeys. You get passwordless login, phishing resistance, and seamless cross-device synchronization.
https://fusionauth.io/feature/passkeys -
MFA Yes verified 2026-07-30
FusionAuth's Intelligent MFA supports methods like email, SMS, and time-based one-time passwords (TOTP).
https://fusionauth.io/feature/multifactor-authentication -
Enterprise SSO (SAML / OIDC) Yes verified 2026-07-30
Identity Providers enable third-party login. This includes social options such as Facebook and Google, and enterprise options such as OIDC and SAML.
https://fusionauth.io/docs/lifecycle/authenticate-users/identity-providers -
SCIM provisioning Yes verified 2026-07-30
Docs state: 'This feature is only available in the Enterprise plan.' Not included in Community/Starter/Essentials.
FusionAuth can consume SCIM formatted requests and act as the provisioning server in a SCIM client/server environment.
https://fusionauth.io/docs/lifecycle/migrate-users/scim -
B2B org / multi-tenant Yes verified 2026-07-30
Isolation modeled via Tenants, each with its own users, applications, groups, and configuration.
FusionAuth simplifies user management for complex structures such as B2B2C SaaS.
https://fusionauth.io/platform/organizations -
Self-hostable Yes verified 2026-07-30
Maintain complete control over your data by hosting FusionAuth on-premises, in a private cloud, or even under your desk.
https://fusionauth.io/platform/self-hosting -
Pre-built UI components Yes verified 2026-07-30
FusionAuth themes allow you to customize the hosted login pages and other user workflows such as forgot password.
https://fusionauth.io/docs/customize/look-and-feel -
RBAC / permissions Yes verified 2026-07-30
Role-based access control (RBAC) lets you assign predefined roles to users, making your access management more efficient.
https://fusionauth.io/feature/role-based-access-control -
Open source No verified 2026-07-30
Core server is closed-source under a proprietary EULA; client libraries, example apps, JWT library, and docs are Apache 2.0.
At this point we have chosen a closed source model for the core product but open source many components as well.
https://fusionauth.io/license-faq -
Generous free tier (MAUs) Yes verified 2026-07-30
Unlimited MAUs applies to the self-hosted Community edition. There is no free tier for the hosted FusionAuth Cloud; paid plans start at $162/mo.
FusionAuth Community is free and unlimited. It has the core authentication features.
https://fusionauth.io/pricing
FAQ
Yes. Zitadel, Auth0 and Clerk have a free tier or are fully free. Free-tier limits in the comparison table are verified and dated.
Ory, Zitadel and Keycloak — every license claim links its source.