Auth0

Hosted identity with social login, SSO and extensible authentication flows.

ssooauth

Websiteauth0.com

CategoryAuth & users

PricingFreemium

Card requiredNo

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ABOUT

What is Auth0?

Auth0, now part of Okta, is a mature identity platform that handles the heavy lifting of authentication. It supports OAuth 2.0, OIDC, SAML, passwordless, MFA and dozens of social logins through a unified SDK and dashboard. Developers use it to avoid building auth infrastructure from scratch while keeping full control over login UX with Actions (serverless hooks) and custom domains.

BEFORE YOU SIGN UP

What you should know

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Broad protocol and provider supportOAuth 2.0, OIDC, SAML, WS-Fed, LDAP and dozens of social providers work out of the box with minimal config.

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Powerful extensibility with ActionsServerless functions let you hook into the auth pipeline at any stage to add custom logic, enrich tokens or block logins.

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Part of OktaOperates as a separate brand, but roadmap and enterprise feature priorities are shaped by the parent company.

Pricing gets complex at scaleAfter the free tier, per-MAU pricing and enterprise add-ons can push costs into hundreds of dollars without much warning.

COMMUNITY

From the forums

Developers value Auth0's broad protocol support and excellent documentation but frequently complain about opaque pricing after the Okta acquisition. The free tier is generous, yet cost spikes at scale can surprise teams. Many recommend it for enterprise projects and MVPs alike, though hobbyists often find it overkill.

— Community sentiment

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ABOUT US

Honest, independent, no fluff.

No paid placements. Just a clear look at what this does, what it costs, and what to know before you commit.

FAQ

Questions, answered.

Is Auth0 still developer-friendly after the Okta acquisition?＋

Yes, Auth0 continues to operate with its own brand, dashboard and product team. Some enterprise features tie into the Okta ecosystem, but the core developer experience remains the same.

Does Auth0 support passwordless authentication?＋

Yes, Auth0 provides WebAuthn passkeys, magic links via email, SMS OTP and biometric authentication alongside traditional password-based flows.

How much does Auth0 cost after the free tier?＋

Paid plans start at around $35/month for the B2C essentials tier covering up to 500 MAU, with enterprise plans scaling from there.