Auth0 alternatives.
Teams leave Auth0 for three reasons that show up in its own profile: the bill scales steeply above 100k MAU, Actions-driven customization creates lock-in, and above 500k MAU a self-hosted or hyperscaler-native option usually wins on cost. This page ranks the replacements by the specific pain each one removes, from the same capability matrix, with no vendor money.
Ranked on: best replacement by pain point
Read the Auth0 profile for the full verdict these pains are drawn from.
Why teams leave Auth0
- Cost at scale. Auth0 prices on tiered MAU and the curve gets steep past 100k MAU. Above 500k MAU the monthly bill is often the single largest line item in the identity budget, which is what sends teams toward self-hosting or hyperscaler-native auth.
- Lock-in through Actions. The custom logic that makes Auth0 powerful (Actions, Rules, Hooks) is proprietary. The more you build into it, the more a migration costs, which is the real switching tax rather than the SDK rewrite.
- Enterprise SSO economics. Auth0 gates B2B Organizations and enterprise connections into higher tiers, so the per-customer cost of selling upmarket climbs exactly when you start closing enterprise deals.
- Passkey orchestration. Auth0 supports WebAuthn, but teams that want passkey-first flows with conditional UI as the default often find newer platforms ship better orchestration out of the box.
The alternatives, ranked
WorkOS
enterprise SSO, free to 1M MAUEnterprise SSO without Auth0 pricing.
WorkOS wins when your cost driver is selling SSO and SCIM into enterprise accounts.
WorkOS is built around the B2B enterprise-readiness layer: SAML, OIDC, directory sync (SCIM), and audit logs, with a free tier that runs to 1M MAU on the core user-management product. That pricing model removes the exact line item that makes Auth0 expensive when you move upmarket. It is narrower than Auth0 on consumer B2C breadth, which is the trade.
- Best for
- B2B SaaS teams whose growth is enterprise logos demanding SSO, SCIM, and audit logs.
- Watch out for
- Not a full B2C consumer-identity suite; if your volume is consumer logins, the free-to-1M framing does not map to your shape.
Stytch
passkey-first, modern primitivesDated auth primitives and weak passkey orchestration.
Stytch wins when you want passkey-first and passwordless as the default, not a bolt-on.
Stytch ships modern auth primitives (passkeys, magic links, embedded flows, device fingerprinting) with orchestration designed around passwordless rather than retrofitted onto a password core. For teams rebuilding auth in 2026, the developer surface is cleaner than Auth0's accreted feature set. It is younger, so the long-tail enterprise connector catalog is thinner.
- Best for
- Product teams rebuilding consumer auth around passkeys and passwordless from the start.
- Watch out for
- Smaller enterprise federation catalog than Auth0; verify your specific IdP connectors exist.
Clerk
fast launch for Next.js and ReactAuth0 is heavy for a small modern app under 100k MAU.
Clerk wins when you are a Next.js or React team that wants drop-in auth UI and to ship this week.
Clerk delivers prebuilt, themeable auth components and a developer experience tuned for the React and Next.js ecosystem, so a working sign-in flow is a matter of hours rather than days. Under 100k MAU it is the fastest path to a polished flow. The economics and depth tilt back toward Auth0 as you scale into heavy enterprise B2B requirements.
- Best for
- React and Next.js teams under 100k MAU who value time-to-first-login over breadth.
- Watch out for
- Per-MAU pricing climbs at scale; re-run the math before you cross into six-figure MAU.
FusionAuth
self-host, lighter than KeycloakPer-MAU cost you cannot escape on any SaaS tier.
FusionAuth wins when the goal is to delete the per-MAU line item by self-hosting.
FusionAuth runs self-hosted (or in their cloud) with a free Community edition and a licensing model that does not charge per active user, so cost decouples from growth. It carries most of the feature breadth teams expect from Auth0 with materially lighter operations than Keycloak. You own the deployment, patching, and uptime, which is the cost that replaces the bill.
- Best for
- Teams with ops capacity that want predictable, MAU-independent identity cost.
- Watch out for
- Self-hosting means you own availability and upgrades; the bill moves from invoice to headcount.
Descope
no-code flow orchestrationAuth flows that need engineering time for every change.
Descope wins when you want to build and change auth flows in a visual builder, not in Actions code.
Descope centers on a drag-and-drop flow builder for authentication and user journeys, including passwordless and step-up, which moves flow changes out of the engineering backlog. The capability matrix is close to Auth0 on the axes most teams use. The visual model is the differentiator; if your team prefers code-first control, that advantage inverts.
- Best for
- Teams that iterate on auth flows often and want non-engineers able to change them.
- Watch out for
- Visual orchestration is a different mental model; code-first teams may find it indirect.
SSOJet
B2B SSO and SCIM at budget, per-org billingPer-MAU pricing punishes you for adding enterprise tenants.
SSOJet wins when you sell B2B SSO and SCIM and want per-organization pricing with a 100k MAU free tier.
SSOJet focuses on the B2B enterprise-readiness layer (SAML and OIDC SSO, SCIM provisioning) billed per organization rather than per MAU, with a free tier to 100k MAU. For a SaaS adding enterprise customers one logo at a time, per-org billing matches how the revenue actually arrives. It is scoped to the B2B SSO problem, not a full consumer suite.
- Best for
- B2B SaaS adding enterprise SSO and SCIM where cost should track tenants, not user volume.
- Watch out for
- Scoped to the enterprise-readiness layer; pair it with your existing stack for full B2C breadth.
Pain to pick
Map your specific problem to the pick that removes it.
| If your problem is | What fixes it |
|---|---|
| Bill explodes above 100k MAU | WorkOS, FusionAuth |
| Need enterprise SSO and SCIM at budget | WorkOS, SSOJet |
| Need to self-host and kill per-MAU cost | FusionAuth, Keycloak |
| Want passkey-first modern auth | Stytch |
| Fast launch on Next.js or React | Clerk |
| B2B admin-portal depth | Frontegg |
| Already all-in on AWS | Amazon Cognito |
| B2C passwordless 100k to 1M MAU | MojoAuth |
| Full open-source control | Keycloak |
Comparison table
Pulled from each vendor's capability matrix. Last verified 2026-06-06.
| Capability | Auth0 | WorkOS | Stytch | Clerk | FusionAuth | Descope | SSOJet |
|---|---|---|---|---|---|---|---|
| Deployment | cloud SaaS | cloud SaaS | cloud SaaS | cloud SaaS | self hosted, cloud SaaS, on prem, hybrid | cloud SaaS | cloud SaaS |
| Segment fit | B2C, B2B SaaS, enterprise | B2B SaaS, enterprise | B2C, B2B SaaS | B2C, B2B SaaS | B2C, B2B SaaS, enterprise | B2C, B2B SaaS | B2B SaaS, enterprise |
| Pricing model | tiered MAU | per organization | tiered MAU | tiered MAU | tiered MAU | tiered MAU | per organization |
| Native passkeys | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes |
| B2B Orgs / Enterprise SSO | Orgs ✓ · SSO ✓ | Orgs ✓ · SSO ✓ | Orgs ✓ · SSO ✓ | Orgs ✓ · SSO ✓ | Orgs ✓ · SSO ✓ | Orgs ✓ · SSO ✓ | Orgs ✓ · SSO ✓ |
| FedRAMP | High (via Okta) | ✕ No | ✕ No | ✕ No | ✕ No | ✕ No | ✕ No |
| Fine-grained authz | ✓ Yes | ✓ Yes | ~ Partial | ~ Partial | ✓ Yes | ✓ Yes | ✓ Yes |
| Free-tier ceiling | 25k MAU | 1M MAU | 10k MAU | 10k MAU | Yes | 7.5k MAU | 100k MAU |
How to choose
- If the problem is the bill at scale and you have ops capacity, self-host FusionAuth to remove per-MAU cost.
- If the problem is enterprise SSO economics, use WorkOS (free to 1M MAU) or SSOJet for per-org billing.
- If the problem is shipping modern auth fast under 100k MAU, use Clerk for React and Next.js or Stytch for passkey-first.
- If you are not sure which pain dominates, answer six questions in the vendor selector.
FAQ
- What is the best alternative to Auth0?
- There is no single best alternative; the right pick follows your reason for leaving. For enterprise SSO without Auth0 pricing, WorkOS is free to 1M MAU. To eliminate per-MAU cost, self-host FusionAuth. For passkey-first auth, pick Stytch. For a fast Next.js launch under 100k MAU, pick Clerk. For B2B SSO and SCIM on a budget, pick SSOJet.
- Is there a free or open source alternative to Auth0?
- Yes. Keycloak is the de-facto open source standard (Apache 2.0, self-hosted, no per-MAU cost), and FusionAuth offers a free Community edition with lighter operations. WorkOS and SSOJet also offer large free tiers (1M and 100k MAU) on their B2B user-management products. See the open source CIAM page for the full self-hosted list.
- Why is Auth0 so expensive at scale?
- Auth0 prices on tiered MAU and gates B2B Organizations and enterprise connections into higher tiers. The curve steepens past 100k MAU, and above 500k MAU the monthly cost frequently exceeds what a self-hosted (FusionAuth, Keycloak) or hyperscaler-native (Cognito) deployment would cost to run.
- How hard is it to migrate off Auth0?
- The SDK rewrite is a 60 to 90 day exercise. The harder cost is migrating proprietary Actions, Rules, and Hooks logic, which has no direct equivalent on most targets and must be re-implemented. Password hashes export in bulk, so users do not need to reset credentials on a well-planned migration.
Further reading from the blog
Longer-form analysis on guptadeepak.com that pairs with this switching guide.
Keep reading
Editorial note
This page ranks on one stated axis and nothing else. Every vendor is scored on the same matrix, every pick links to its internal profile, and we take no vendor money, no affiliate links, no paid placement. If you believe a claim is inaccurate or out of date, see the disclaimer for how to reach the editorial team. Last verified 2026-06-06.