AltCatalog

Alternatives to Auth0

Enterprise-grade authentication and authorization platform

Alt Score

Alt Score · 89

How this alternative ranks. How it works →

Verified coverage 90%88
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

#4 of 12 in Authentication & identity providers

Auth0 ranks #4 of 12 in Authentication & identity providers, with an Alt Score of 89. It is proprietary, freemium from $35/mo and available on the web. 12 of 12 checklist rows are verified against a public source.

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 web, mobile, and API applications.

Most compared with FusionAuthOryZitadel
Official site Suggest an edit Data history Work on Auth0? Claim this page
Who it's for

Development teams building consumer (B2C) or business (B2B/SaaS) applications who need production-grade login, MFA, and enterprise SSO without building an identity system in-house — from startups on the free tier up to regulated enterprises needing private cloud deployment.

What you get

A hosted authentication platform (Universal Login) with social login, passwordless/magic-link and passkey/WebAuthn support, adaptive MFA, SAML/OIDC enterprise SSO, inbound SCIM provisioning, and B2B Organizations with role-based access control — delivered as a managed cloud service, now part of Okta.

How it works

You connect your app via Auth0's SDKs/quickstarts and redirect users to Auth0's hosted Universal Login (or build a fully custom UI with Advanced Customization for Universal Login); Auth0 handles credential storage, social/enterprise identity provider connections, MFA challenges, and issues tokens (JWT/OIDC) back to your application.

Why people leave Auth0

Dashed reasons are sourced facts; the rest are opinions. Vendors can dispute.

Sign in to add a reason — new reasons go through moderation before appearing.

Ranked alternatives

Ordered by Alt Score. Click any score to see the breakdown.

Sponsored Paid slot. Never affects the ranked order below. Promote here →
01

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.

Proprietary WindowsmacOSLinuxWeb
Alt Score

Alt Score · 93

How this alternative ranks. How it works →

Verified coverage 90%92
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

02
Ory

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.

Apache-2.0 LinuxmacOSWindows
Alt Score

Alt Score · 93

How this alternative ranks. How it works →

Verified coverage 90%92
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

03

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.

AGPL-3.0 LinuxmacOSWeb
Alt Score

Alt Score · 93

How this alternative ranks. How it works →

Verified coverage 90%92
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

04

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.

Proprietary WebiOSAndroid
Alt Score

Alt Score · 89

How this alternative ranks. How it works →

Verified coverage 90%88
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

05

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.

Proprietary WebiOSAndroid
Alt Score

Alt Score · 89

How this alternative ranks. How it works →

Verified coverage 90%88
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

06

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.

Proprietary WebiOSAndroid
Alt Score

Alt Score · 89

How this alternative ranks. How it works →

Verified coverage 90%88
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

07

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.

Proprietary WebiOSAndroid
Alt Score

Alt Score · 85

How this alternative ranks. How it works →

Verified coverage 90%83
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

08

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.

Proprietary Web
Alt Score

Alt Score · 85

How this alternative ranks. How it works →

Verified coverage 90%83
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

09

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.

Apache License 2.0 LinuxWindowsWeb
Alt Score

Alt Score · 81

How this alternative ranks. How it works →

Verified coverage 90%79
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

10

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.

Web
Alt Score

Alt Score · 78

How this alternative ranks. How it works →

Verified coverage 90%75
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

11

Kinde is an authentication-as-a-service platform aimed at early-stage and growing SaaS companies, bundling social login, passwordless, MFA, RBAC, and multi-tenant org support with pre-built UI compone.

Proprietary Web
Alt Score

Alt Score · 74

How this alternative ranks. How it works →

Verified coverage 90%71
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

Feature comparison

Rows come from the Authentication & identity providers checklist (16 rows). Human-verified cells only. ? means the value has not been verified.

Comparing Auth0 FusionAuth × Ory × Zitadel × Clerk × Frontegg ×
+ Add app
Amazon Cognito Descope Keycloak Kinde Stytch WorkOS
Authentication & identity providers checklist Auth0FusionAuthOryZitadelClerkFrontegg
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)
verified pending unknown (?) Click any cell to view its source or propose a value
Sources & verification 17

Every fact and feature listed for Auth0 is verified against its own pages. Each alternative is sourced on its own page.

  • Status acquired verified 2026-07-13
    © 2026 Okta, Inc. All Rights Reserved.
    https://auth0.com/platform/cloud-deployment
  • License Proprietary verified 2026-07-13
    Essentials $ 35 / month
    https://auth0.com/pricing
  • Pricing model Freemium verified 2026-07-13
    Free $ 0 / month No credit card needed
    https://auth0.com/pricing
  • Starts at $35/mo verified 2026-07-13
    Essentials $ 35 / month For projects with higher production demands.
    https://auth0.com/pricing
  • Platforms Web verified 2026-07-13
    From Auth0 Dashboard > Authentication > Social, select Create Connection to see a list of supported social identity providers.
    https://auth0.com/docs/authenticate/identity-providers/social-identity-providers
  • Social login Yes verified 2026-07-13
    Social login is a method of authentication that allows users to log in to an application using existing credentials from a social identity provider, such as Google or Facebook.
    https://auth0.com/docs/authenticate/identity-providers/social-identity-providers
  • Passwordless / magic links Yes verified 2026-07-13
    Magic Links: This form of passwordless authentication asks a user to enter their email address into the login box. An email is then sent to them, with a link they can click to log in.
    https://auth0.com/features/passwordless
  • Passkeys / WebAuthn Yes verified 2026-07-13
    Passkeys are a secure, passwordless authentication method modeled on the FIDO2 (WebAuthn and CTAP) standards.
    https://auth0.com/docs/authenticate/database-connections/passkeys
  • MFA Yes verified 2026-07-13
    Auth0 MFA is a security layer that requires users to provide two or more verification factors to gain access. It supports various factors including push notifications via Auth0 Guardian, SMS, voice, e
    https://auth0.com/features/multifactor-authentication
  • Enterprise SSO (SAML / OIDC) Yes verified 2026-07-13
    Future-proof your stack with protocols you already trust: OpenID Connect, SAML, LDAP, and more.
    https://auth0.com/features/single-sign-on
  • SCIM provisioning Yes verified 2026-07-13

    Pricing page lists Inbound SCIM as Included on Free and Enterprise plans, but Not included on Essentials/Professional (upgrade to a B2B tier required).

    Auth0 supports inbound SCIM for selected Enterprise Identity Providers.
    https://auth0.com/docs/authenticate/protocols/scim
  • B2B org / multi-tenant Yes verified 2026-07-13
    Auth0 Organizations is a B2B identity solution that delivers a programmatic toolset of APIs and SDKs for app development teams to manage and customize workflows for their end customers at scale.
    https://auth0.com/organizations
  • Self-hostable Partial verified 2026-07-13

    Private Cloud is a dedicated, Auth0-managed single-tenant instance (Enterprise add-on), not a self-hosted install customers run themselves.

    The power of Auth0, with the benefits of a managed private instance — deployable on Microsoft Azure or Amazon Web Services.
    https://auth0.com/platform/cloud-deployment
  • Pre-built UI components Yes verified 2026-07-13
    Deliver production-ready, branded login experiences quickly with Universal Login.
    https://auth0.com/features/universal-login
  • RBAC / permissions Yes verified 2026-07-13

    Pricing page shows 'Role-based Access Control Per Organization' as an Essentials-tier ($35/mo) feature, not included on the Free plan.

    Role-based access control (RBAC) refers to the idea of assigning permissions to users based on their role within an organization.
    https://auth0.com/docs/manage-users/access-control/rbac
  • Open source No verified 2026-07-13

    Auth0's platform is a closed, commercially licensed SaaS with paid subscription tiers; only client SDKs are open source, not the core service.

    Free $ 0 / month ... Essentials $ 35 / month ... Professional $ 240 / month ... Enterprise ... Contact us
    https://auth0.com/pricing
  • Generous free tier (MAUs) Yes verified 2026-07-13
    Up to 25,000 monthly active users
    https://auth0.com/pricing

FAQ

Yes. FusionAuth, Zitadel 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.