The Best Auth0 Alternatives in 2026 (Authentication Platforms)
Tolodora Editorial Team
Tolodora's editorial team — we research, compile and regularly update these software guides from public sources and product documentation.
Auth0 made outsourcing authentication mainstream, but its per-user pricing gets expensive quickly, and some teams want a more modern developer experience or an open-source, self-hostable option. The good news: the auth space is now full of strong choices.
These all handle sign-up, login, sessions and identity so you don't have to build auth from scratch; they differ on pricing, DX, and openness.
We rated every pick on four things — pricing and value, functionality, ease of use, and support. Here's the rundown.
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| # | Tool | Best for | Rating |
|---|---|---|---|
| 1 | Clerk | Developers (especially React/Next.js) who want gorgeous, complete auth fast. | 4.5/5 |
| 2 | Supabase Auth | Teams using (or open to) Supabase who want auth bundled with their database. | 4.5/5 |
| 3 | WorkOS | B2B SaaS teams that need to add enterprise SSO and directory sync quickly. | 4.4/5 |
| 4 | Keycloak | Teams that want full-featured, self-hosted, no-per-user-fee identity. | 4.2/5 |
| 5 | Stytch | Developers who want modern passwordless auth and built-in fraud protection. | 4.3/5 |
| 6 | Ory | Engineering teams that want composable, open-source identity they fully control. | 4.2/5 |
Clerk
- Pricing
- 8.2/10
- Functionality
- 9.2/10
- Ease of use
- 9.6/10
- Support
- 8.8/10
What I like
The best modern DX — drop-in, beautiful auth UI components, session management, orgs and MFA that you can integrate in minutes.
Best for
Developers (especially React/Next.js) who want gorgeous, complete auth fast.
Clerk is the developer-favorite Auth0 alternative: prebuilt, customizable UI components, user and organization management, MFA and a superb SDK experience. It's the fastest way to add polished auth to a modern web app, with a generous free tier. The default pick for many new projects. For your business, it's one of the stronger options on this shortlist.
Supabase Auth
- Pricing
- 9.4/10
- Functionality
- 8.8/10
- Ease of use
- 9.0/10
- Support
- 8.4/10
What I like
Full-featured auth (email, OAuth, magic links, MFA) built into Supabase and tied to Postgres row-level security — and free to start.
Best for
Teams using (or open to) Supabase who want auth bundled with their database.
Supabase Auth is a complete, open-source auth solution integrated with a Postgres backend, supporting social logins, magic links, MFA and row-level security. If you use Supabase (or want an all-in-one backend), it's essentially free auth that's production-ready — a very cost-effective Auth0 alternative. For your business, it's one of the stronger options on this shortlist.
WorkOS
- Pricing
- 8.0/10
- Functionality
- 9.2/10
- Ease of use
- 8.8/10
- Support
- 8.8/10
What I like
Makes enterprise features (SAML SSO, SCIM, audit logs) trivial to add, with free tiers for core auth (AuthKit) — built to help you sell upmarket.
Best for
B2B SaaS teams that need to add enterprise SSO and directory sync quickly.
WorkOS focuses on enterprise-readiness: add SAML single sign-on, SCIM directory sync and audit logs with minimal work, plus AuthKit for standard auth. It's the go-to Auth0 alternative when landing enterprise customers (who demand SSO) is the priority. For a your business setup, it's well worth a closer look.
Keycloak
- Pricing
- 9.6/10
- Functionality
- 9.2/10
- Ease of use
- 6.8/10
- Support
- 7.8/10
What I like
A mature, open-source identity platform you can self-host for free — SSO, SAML/OIDC, social login, and fine-grained access control.
Best for
Teams that want full-featured, self-hosted, no-per-user-fee identity.
That focus makes it a natural fit for many your business. Keycloak is the veteran open-source identity and access management platform: SSO, standards support (OIDC/SAML), user federation and roles, all self-hosted for free. It's more work to run than a SaaS, but for organizations wanting control and no per-user costs, it's a powerful Auth0 alternative.
Stytch
- Pricing
- 8.2/10
- Functionality
- 9.0/10
- Ease of use
- 8.8/10
- Support
- 8.6/10
What I like
A developer-first auth platform strong on passwordless, biometrics and fraud prevention, with flexible APIs and prebuilt UI.
Best for
Developers who want modern passwordless auth and built-in fraud protection.
Stytch is an API-first auth platform with a focus on passwordless flows (magic links, OTP, passkeys), plus device fingerprinting and fraud prevention. Its flexible SDKs and security features make it a strong, modern Auth0 alternative, especially for consumer apps prioritizing passwordless. It's a common pick among your business comparing their choices.
Ory
- Pricing
- 9.2/10
- Functionality
- 9.0/10
- Ease of use
- 7.2/10
- Support
- 8.0/10
What I like
Open-source, cloud-native identity infrastructure (Kratos, Hydra) built on open standards — highly flexible and self-hostable.
Best for
Engineering teams that want composable, open-source identity they fully control.
Ory offers open-source identity building blocks — authentication (Kratos), OAuth2/OIDC (Hydra), and permissions (Keto) — that you can self-host or use via Ory Network. It's more modular and developer-driven than Auth0, ideal for teams that want standards-based, controllable identity infrastructure. Among your business, it earns its spot for the reasons above.
The verdict
Want the best modern developer experience with drop-in UI? Clerk. Already using Supabase or Firebase? Their built-in auth is free and excellent. Need open-source and self-hosted? Keycloak or Ory. Enterprise SSO fast? WorkOS.
Frequently asked questions
What is the best open-source Auth0 alternative?
Keycloak and Ory are the leading open-source, self-hostable identity platforms. Supabase Auth is also open-source and far simpler to adopt for most apps.
Which Auth0 alternative is cheapest?
If you're already using Supabase or Firebase, their built-in auth is effectively free. Self-hosting Keycloak or Ory avoids per-user fees entirely, and Clerk's free tier is generous for small apps.
Which alternative is best for enterprise SSO?
WorkOS specialises in making enterprise features (SAML SSO, SCIM directory sync) fast to add, making it ideal when you need to sell to enterprises quickly.
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