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Auth0

auth

Enterprise-grade authentication and identity

authauthenticationidentityssosecurity
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Overview

Auth0 is an authentication and identity platform built for applications that need robust security, SSO and compliance. It handles login, social and enterprise connections, MFA, and fine-grained access control. It is a common choice for enterprise SaaS that needs SAML SSO, compliance certifications and advanced security policies.

Enterprise SSO

SAML, OIDC and enterprise connections.

Compliance

SOC 2, HIPAA BAA and advanced policies.

MFA

Multi-factor and adaptive security.

Quick Facts

Categoryauth
PricingFree up to 25,000 MAU; paid tiers Essentials, Professional and Enterprise
Founded2013
HQBellevue, USA
Websiteauth0.com

Pros

Mature, battle-tested platform
Strong enterprise SSO and compliance
Extensive customization via rules/actions
Broad protocol and integration support
Improved free tier MAU limits

Cons

Pricing climbs quickly at scale
More complex than lightweight alternatives
SSO add-ons gated to higher tiers
Heavier setup than newer DX-focused tools

Key features

Social and enterprise login
SAML and OIDC SSO
Multi-factor authentication
Rules and actions for custom logic
Compliance certifications

Pricing

Free

$0

Up to ~25,000 MAU

Essentials

~$35/mo

Core paid features

Professional

~$240/mo

SSO add-ons and more

Best for

Enterprise SaaS

Add SSO and compliance for big customers.

B2B apps

Manage org-level identity and access.

Secure login

Drop-in authentication with MFA.

Alternatives to Auth0

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C

Clerk

auth

Authentication for modern web apps

freemiumView tool →
S

Supabase

backend

Open source Firebase alternative

freemiumView tool →

Compare Auth0

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A
vs
C

Auth0 vs Clerk

Compare features, pricing and performance

Frequently asked questions

Is Auth0 free?

Auth0 has a free tier (up to around 25,000 monthly active users), with paid Essentials, Professional and Enterprise plans above that.

What is Auth0 used for?

Authentication and identity: login, social and enterprise SSO, MFA and access control for apps.

Does Auth0 support SSO?

Yes, including SAML and OIDC enterprise single sign-on, with SSO add-ons on higher tiers.

Is Auth0 good for enterprises?

Yes, it is widely used by enterprise SaaS for its compliance certifications and advanced security features.

How does Auth0 compare to Clerk?

Auth0 is stronger for enterprise compliance and SSO, while Clerk is favored for developer experience and modern React/Next.js integration.

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