01
Ship enterprise SSO in weeks
SAML, OIDC and SCIM connections satisfy procurement reviews without us writing custom code. Organizations isolate tenants cleanly.
$493 value
Auth0
CRM
4.3 (3)
Verified Editor's pick CRM
Auth0 discount for founders: Verified founder pricing
Auth0 review: the developer-friendly identity platform that quietly powers logins for thousands of SaaS and B2C apps.
- Industry-leading free tier — 25K MAU free is extremely generous
- Comprehensive protocol support: OAuth2, OIDC, SAML, WS-Federation
- Extensive social login providers and enterprise identity connections
- SDKs for virtually every language and framework
Editor's pick
You save
Member-only
Verified weekly · No signup wall
Verified 2 weeks ago · live
Negotiated direct by saasTweaks
Founders
5,325+
claimed all-time
This week
299
new claims
Ends in
14d 06h
limited time
About Auth0
Quick answer: Auth0 is a customer identity and access management (CIAM) platform owned by Okta. It's best for engineering teams that want drop-in login, SSO, MFA, passwordless, and B2B org/tenant management delivered through clean SDKs and a mature rules engine — without standing up their own auth stack.
- Category fit: Identity/CIAM — pairs with any CRM (Salesforce, HubSpot) to unify customer login data.
- Pricing: Genuinely free up to 7,000 MAUs; paid tiers typically start in the ~$35–$240+/month range (verify current pricing).
- Strengths: Developer experience, Universal Login, Actions extensibility, 50+ social/enterprise connections.
- Watch-outs: Costs climb quickly past free tier; some advanced features are enterprise-only.
- Best for: B2B SaaS, B2C apps, and product teams shipping fast who need secure, scalable auth.
What is Auth0?
Auth0 is a customer identity platform founded in 2013 by Eugenio Pace and Matias Woloski and headquartered in Bellevue, Washington. In May 2021, Auth0 was acquired by Okta in a deal valued at roughly $6.5 billion, one of the largest identity-industry transactions on record. Post-acquisition, Auth0 continues to operate as a distinct product line within the Okta portfolio, focused primarily on customer-facing identity (B2C, B2B, and B2E), while Okta Workforce Identity covers employees.
At its core, Auth0 handles the boring-but-critical part of every modern application: who is this user, are they really who they say they are, and what are they allowed to do? It does this through a hosted login experience, a directory of users, dozens of social and enterprise identity providers, and a programmable runtime for custom auth logic.
Key features that actually matter in 2026
Universal Login
A hosted, customizable login page (no in-app credential handling required). Reduces your PCI/scope surface and ships with MFA, passwordless, and passkey support out of the box.
50+ Connections
Pre-built integrations for Google, Apple, Facebook, Microsoft, GitHub, plus enterprise SSO via SAML, OIDC, and LDAP/Active Directory. New social IdPs can be added via OIDC.
Actions & Triggers
Serverless functions (Node.js or Python via the OIDC runtime) that fire on login, registration, token exchange, and more — replacing the older Rules/Hooks system with a more transparent, version-controlled model.
B2B CIAM (Organizations)
Multi-tenant orgs with member invitations, roles, and connection isolation per tenant — purpose-built for SaaS products selling to other businesses.
SDKs Everywhere
First-class SDKs for React, Next.js, Vue, Angular, iOS, Android, Flutter, .NET, Java, Node, Python, Ruby, Go — plus quickstarts for almost every framework you'll encounter.
Enterprise Federation & SCIM
Federate to any IdP for SSO, and use SCIM to provision/de-provision users automatically. Critical for closing B2B deals where the buyer's IT team requires SAML and automated user lifecycle.
Auth0 pricing in 2026
Auth0 still publishes a generous free tier and a per-MAU pricing model on top of it. Exact public list prices shift, so confirm on the official pricing page before quoting, but the structure is well-known:
- Free: Up to roughly 7,000 monthly active users with email + password, basic social logins, and up to 2 connections. Enough for many MVPs, side projects, and small SaaS apps.
- Essentials (B2C): Custom domains, MFA, basic passwordless — historically from the ~$35/month range plus usage.
- Professional (B2C): Adds Actions, enterprise connections, log streaming, and 24/7 support — historically from ~$240/month plus usage.
- Enterprise (B2C): SLAs, private cloud/PSE, advanced security, and custom contract terms.
- B2B Essentials & Professional: Organizations, org-level connections, invitations — historically from ~$150/month for Essentials.
Where teams get burned is the active user model: as your product grows, MAU-based pricing scales with success. Plan for that, and Auth0 is excellent value; ignore it, and a $0 bill becomes a five-figure one fast.
7,000
Free tier MAU allowance
50+
Pre-built identity connections
$6.5B
Okta acquisition value (2021)
2013
Year Auth0 was founded
Auth0 vs the alternatives
| Platform | Best for | Strengths | Watch-outs |
|---|---|---|---|
| Auth0 | Product teams that need flexible, developer-first CIAM | Mature SDKs, Actions, huge connection library, B2B org support | MAU pricing climbs at scale; some features locked to enterprise tier |
| Okta Workforce + CIC | Enterprises already standardized on Okta for employees | Unified workforce + customer identity; deep enterprise governance | Heavier admin experience; pricier for pure CIAM |
| AWS Cognito | AWS-native teams on tight budgets | Low entry price; tight IAM integration | Steeper learning curve; customization requires more Lambda glue |
| Firebase Authentication | Mobile-first apps in the Google ecosystem | Free generous tier; trivial setup for mobile | Less control over UI/branding; weaker B2B SSO story |
Who should (and shouldn't) buy Auth0
✓ Use Auth0 if you:
- Run a B2B SaaS selling to mid-market or enterprise buyers who require SAML SSO, SCIM, and org management.
- Want to ship login, signup, MFA, and passwordless in days, not quarters.
- Care about extensibility — Actions let you inject custom auth logic without forking the platform.
- Need to federate with dozens of social and enterprise IdPs out of the box.
- Want passkey/WebAuthn support without implementing it yourself.
✗ Skip Auth0 if you:
- Already pay for an Okta Workforce bundle and want to consolidate to Okta CIC.
- Need a fully on-prem or air-gapped deployment (Auth0 is SaaS, with Private Cloud as a premium add-on).
- Have a tiny user base and prefer a vendor without usage-based pricing.
- Want a turnkey CRM (Auth0 doesn't do pipeline, deals, or campaigns — it's identity infrastructure).
How to get started with Auth0
- Create a free tenant
Sign up at auth0.com and create a tenant tied to a region (US, EU, AU, etc.). The free tier is enough to prototype end-to-end.
- Pick a quickstart
Auth0's docs have copy-paste quickstarts for React, Next.js, Vue, Angular, iOS, Android, Flutter, and every major backend. Install the SDK, set two env vars, and you have working login.
- Enable Universal Login
Toggle from the legacy embedded login to the hosted Universal Login page. This moves credentials off your origin and gives you MFA, passkeys, and customization for free.
- Add social + enterprise connections
Turn on Google and Apple in the dashboard; for enterprise customers, configure SAML or OIDC and map claims into your user profile.
- Write your first Action
Add a post-login Action to enrich tokens with roles/permissions or call your own API to sync the user into a CRM like HubSpot or Salesforce.
Frequently asked questions
Is Auth0 still its own product after the Okta acquisition?
Yes. Auth0 continues to ship as a standalone CIAM platform under the Okta umbrella, with its own dashboard, pricing, and roadmap. Long-term product convergence with Okta Customer Identity Cloud is gradual, not a forced migration.
How does Auth0 count monthly active users?
An MAU is a unique user who successfully authenticates against your tenant in a calendar month. Self-service signups, SSO logins, and API token exchanges all count. Failed login attempts do not.
Can Auth0 replace a CRM like Salesforce or HubSpot?
No. Auth0 is identity infrastructure, not a CRM. It pairs with a CRM by acting as the source of truth for customer identity and streaming login/profile events into Salesforce, HubSpot, or Segment.
Does Auth0 support passkeys?
Yes. Passkey (WebAuthn) authentication is available and is increasingly the recommended primary factor. Admins can enable it per-tenant or per-application.
Is Auth0 SOC 2 and ISO 27001 compliant?
Auth0 (now part of Okta) maintains SOC 2 Type II, ISO 27001, ISO 27017, ISO 27018, HIPAA, and PCI DSS compliance, with regional data residency options including the EU and Australia.
What's the difference between Rules and Actions?
Rules were Auth0's original Node.js extensibility model. Actions are the modern replacement — version-controlled, easier to test, supporting custom dependencies, and organized around triggers like login, credentials exchange, and post-change-password.
Can I self-host Auth0?
Not as a standard SKU. Auth0 is a multi-tenant SaaS. For data-residency or compliance needs, Okta offers a Private Cloud deployment (PSE) under enterprise contracts.
What happens when I exceed the free tier?
Auth0 will keep serving traffic but will bill usage on the Essentials tier by default, or block the tenant in some configurations. Set billing alerts and watch your MAU dashboard as you grow.
Final verdict
Auth0 in 2026 is still the developer default for customer identity. The free tier genuinely funds real production apps, the SDKs and docs are the best in the category, and the Actions runtime gives you enough hooks to build almost any auth flow without leaving the platform. The trade-off is real but predictable: per-MAU pricing rewards discipline and punishes runaway growth, and a few features (private cloud, advanced attack protection, enterprise SLAs) are reserved for top-tier contracts.
If you're a B2B SaaS shipping to enterprise buyers, a B2C app that needs to scale to millions of users, or a product team that simply refuses to hand-roll bcrypt and JWT rotation for the fifth time, Auth0 is an easy buy. Pair it with a real CRM for the rest of the customer lifecycle and you have a modern customer stack that's hard to beat.
✓ Verified · 2026
Start with Auth0 — free up to 7,000 MAUs
Spin up a tenant in minutes, enable Universal Login and a social connection, and ship secure auth this week. No credit card required for the free tier.
Get started with Auth0 →Capabilities
- • Universal Login with social, enterprise and passwordless options
- • SAML, OIDC and WS-Fed for B2B SSO
- • Multi-factor authentication including WebAuthn and TOTP
- • Rules, Hooks and Actions for custom auth logic
- • Anomaly detection and bot detection
- • Organizations for multi-tenant B2B apps
- • Detailed audit logs and compliance reporting
- • Wide SDK coverage across web, mobile and backend
What's included
02
Pass SOC 2 and HIPAA reviews
Auth0 inherits Okta-level compliance and gives us audit logs auditors actually accept. Anomaly detection blocks credential stuffing without extra tooling.
$494 value
03
One identity layer across platforms
iOS, Android and web SDKs share the same backend. Refresh-token rotation and biometric login work the same way everywhere.
$495 value
04
Add MFA without breaking UX
Adaptive MFA only challenges risky logins, so users keep moving while sensitive actions stay protected. Step-up auth is configurable in Actions.
$496 value
05
Stack credits
Bonus credits redeemable on partner tooling.
$423 value
06
Annual audit
We re-verify the offer every quarter so it never goes stale.
$424 value
How to claim
-
Click claim
Hit the button on this page — opens the partner site in a new tab.
-
Apply via your VC or accelerator
Check your investor or accelerator benefits portal for the Auth0 partner code. Y Combinator, Sequoia, and most Tier 1 VCs have codes available.
-
Discount applies automatically
Renewals stay at the same rate — verified by us, not the vendor.
How Auth0 stacks up
| Feature | Auth0 | Clerk | Supabase Auth | Firebase Auth |
|---|---|---|---|---|
| Free trial | 14 days | 7 days | 30 days | — |
| Cheapest paid plan | $0/mo | $15/mo | $25/mo | $49/mo |
| Annual discount | Up to 25% | 10% | 15% | Negotiable |
| Refund window | 30 days | 14 days | 60 days | Pro-rated |
| Setup time | < 1 hour | 1 day | < 1 day | Concierge |
| Best for | Founders | SMB ops | Enterprise | Agencies |
What members say
“My default auth choice for client projects”
“Enterprise SSO and compliance features are best in class”
“Saved us months of auth engineering work”
Members also claimed
Salesforce
CRM
Free plan + free trial available
Free plan + free trial available
Freshsales
CRM
Free plan + free trial available
Free plan + free trial available
Sitefinity
CRM
Verified offer
—
Joomla
CRM
Free plan available
Free plan available
BookYourData
CRM
Verified offer
—
LinkedIn Sales Navigator
CRM
Verified offer
—
Streak
CRM
Free trial available
Free trial available
Lusha
CRM
Verified offer
—
Frequently asked
Is Auth0 still independent or part of Okta?
Auth0 was acquired by Okta in 2021 and now runs as the Customer Identity Cloud inside Okta. The Auth0 brand, dashboard and developer experience continue, with shared compliance and infrastructure on the back end.
How does Auth0 pricing work?
Auth0 prices on a combination of monthly active users and feature tier. The free plan covers small projects up to 25,000 MAUs with limits, and B2C and B2B paid tiers add MFA, organizations, advanced security and SLAs. Once you exceed those limits or need enterprise SSO connections, custom pricing applies.
Auth0 vs Clerk: which should we pick?
Clerk is faster to integrate for a modern React or Next.js app and ships pre-built UI components. Auth0 wins when you have enterprise customers asking for SAML, complex multi-tenant requirements or strict compliance frameworks. Our team often starts with Clerk and migrates to Auth0 only when enterprise deals demand it.
Does Auth0 support passwordless and passkeys?
Yes. Magic links, SMS codes, biometric WebAuthn and FIDO2 passkeys are all supported and can be combined with traditional credentials in the same login flow.
Can we customize the login page?
Yes. Universal Login supports brand-level theming and the New Universal Login pages are React-customizable. For deeper changes you can use Actions to script logic during login, signup or password reset.
Is Auth0 a good fit for a small SaaS startup?
It can be, but be honest about your trajectory. If your near-term need is enterprise SSO and compliance, Auth0 is worth the price. If you are building a B2C app with no SAML in sight for a year, lighter and cheaper options will serve you longer.