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FusionAuth

IT & Security · fusionauth.io

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Overview

FusionAuth is an API-first customer identity and access management (CIAM) platform that gives developers login, registration, SSO, MFA, and RBAC out of the box, deployable as a managed cloud service, self-hosted on your own infrastructure, or in a hybrid/air-gapped setup.

The problem FusionAuth solves

Engineering teams building customer-facing login usually have to choose between a fully-managed SaaS identity provider that gets more expensive as user counts grow, or building auth in-house and absorbing the security burden themselves. FusionAuth solves that by shipping a free, self-hostable core alongside a managed cloud option, so teams get login, MFA, SSO, and RBAC out of the box while keeping control over where user data lives and how pricing scales.

Decision context

Use these points to test whether the product fits your operation, not just whether it has a long feature list.

  • Published starting price: Free. Confirm user, usage, and feature limits for the plan you would actually buy.
  • Deployment: cloud, on_premise. Check security, data-residency, and access requirements for every team that will use it.
  • Verified integrations include Google, Apple, Facebook, LinkedIn, Twitter (X), Epic Games. Validate sync direction and plan limits for the connections that matter.
  • This record was last checked on 7/31/2026; pricing and features can change.

How to evaluate FusionAuth

A listing helps create a shortlist; a trial with the team’s real workflow decides whether the tool fits. Use this reading with the structured facts and confirm changes with the vendor.

Workflow fit

The record describes it as a fit for Engineering teams that want a self-hostable or hybrid-deployable CIAM platform to retain control over data residency and compliance, Companies with unpredictable or high user growth who want auth pricing that doesn't penalize scale, Developer teams needing broad SDK/language coverage and an API-first platform. Check that this context matches the volume, roles, and processes your team needs it to support.

Pilot questions

  • Can FusionAuth complete the critical workflow without manual work outside the product?
  • Do the recorded connections (Google, Apple, Facebook, LinkedIn) support the sync direction, permissions, and volume we need?
  • What user, usage, storage, support, or security limits appear after the headline starting price?

Evidence and freshness

This record was checked on 7/31/2026. That date tells you when the record was reviewed, not that the vendor has left its terms unchanged since then.

Best for

  • Engineering teams that want a self-hostable or hybrid-deployable CIAM platform to retain control over data residency and compliance
  • Companies with unpredictable or high user growth who want auth pricing that doesn't penalize scale
  • Developer teams needing broad SDK/language coverage and an API-first platform

Not a fit if

  • Non-technical teams wanting a fully-managed, zero-ops SaaS-only identity provider with minimal configuration
  • Organizations needing built-in privileged access management or full device/MDM management bundled with their identity platform

Pricing

Community

Free

Free, self-hosted core CIAM product with unlimited users, meant to be run on your own infrastructure.

  • Core authentication standards (OAuth2, OIDC)
  • Login, registration, and basic MFA
  • Full REST API, webhooks, and Lambdas
  • SDKs/quickstarts for 20+ languages and frameworks
  • Community support

Starter

$162 per month, billed annually, starting at 1,000 MAUs

Entry paid plan adding premium authentication features and basic hosting for small teams.

  • Breached password detection
  • Machine-to-machine (M2M) authentication
  • Advanced identity providers and custom registration forms
  • Entity and account management

Essentials

$2,970 per month, billed annually, starting price (scales with MAU)

Mid-tier plan for growing products needing advanced MFA, connectivity, and business-hours support.

  • Advanced connectivity and security features
  • Custom OAuth scopes
  • Lambda HTTP Connect
  • Email support (24-48 hour response)

Enterprise

$2,970 per month, billed annually, starting price (scales with MAU)

Top-tier plan for regulated or high-availability deployments needing SCIM, advanced threat detection, and 24/7 support.

  • Everything in Essentials
  • SCIM provisioning and SSO Tenant Manager
  • Advanced threat detection
  • FIPS 140-3 compliance option
  • 24/7 support, high-availability hosting with 99.99% SLA

Features

Audit logsFull Audit Log API plus automatic logging of all admin UI actions, with configurable retention.
Compliance reportingNo dedicated customer-facing compliance-reporting module; company holds SOC 2/ISO 27001 certifications itself.
Device managementSupports OAuth Device Authorization Grant flow and MFA trusted-device tracking, but no full device/MDM console.
Multi-factor authenticationAuthenticator apps, SMS/email OTP, WebAuthn/passkeys, backup codes, and adaptive MFA policies; advanced options gated to paid plans.
Privileged access managementFusionAuth is a CIAM platform, not a PAM tool; no privileged credential vaulting or session brokering.
Public APIAPI-first product; nearly all admin and auth operations are available via REST API, with SDKs for 20+ languages.
Role-based access controlRoles and permissions configurable per application/tenant.
SCIM / directory provisioningSCIM provisioning is included on the Enterprise plan.
Self-hosting / on-premFree Community edition is self-hosted on your own infrastructure with unlimited users; also deployable hybrid or air-gapped.
SSO / SAMLOAuth/OIDC-based SSO on all plans; SAML v2 IdP-initiated SSO and SSO Tenant Manager available on paid plans.

Integrations

GoogleAppleFacebookLinkedInTwitter (X)Epic GamesNintendoSony PlayStation NetworkSteamTwitchXboxLDAPSAML v2OpenID ConnectTwilioSendGridAWS MarketplaceKubernetes

Security & compliance

SOC 2ISO 27001HIPAA (BAA available)GDPRPCI DSSCOPPA

Pros & cons

Pros

  • Fast, developer-friendly setup with a well-documented, API-first REST interface and SDKs/quickstarts for 20+ languages and frameworks
  • Free, unlimited-user self-hosted Community edition plus flexible cloud, hybrid, and air-gapped deployment options avoid vendor lock-in
  • Reviewers consistently praise support quality and documentation, with active community channels
  • Pricing model doesn't penalize user growth the way some competitors' pure per-MAU pricing does

Cons

  • Jump from the free Community tier to paid plans (roughly $162+/mo) feels steep for early-stage startups
  • No dedicated JavaScript/SPA client library for some front-end integration scenarios, per reviewer feedback
  • Weaker infrastructure-as-code tooling (no mature Terraform provider) compared to some competitors
  • Admin UI and theming are considered more functional than polished next to Okta or Auth0

What we found

4.5/5
132 reviews aggregatedLast checked 2026-07-31

Reviewers rate FusionAuth highly for fast setup, self-hosting flexibility, and support quality, with lighter criticism of the paid-tier price jump and less-polished admin UI compared to Okta or Auth0.

Ratings and review counts come from public review platforms. We link to the original source and keep the underlying review text out of this profile.

User reviews

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