The Best Auth0 Alternatives in 2026

1

Clerk

4.3/ 5 overall

Clerk is the alternative most modern web devs fall for. It gives you gorgeous, pre-built sign-in, sign-up and user-profile components that drop straight into a React or Next.js app, plus organizations, multi-factor and session management out of the box. The developer experience is the headline — you can have real auth running in an afternoon. Its free tier is generous (thousands of monthly active users), with paid plans from around $25/month as you scale. It's web-and-frontend-focused, so it's less of a fit for non-JS stacks. But for React/Next.js teams who want great auth with minimal effort, Clerk is hard to beat.

2

Supabase Auth

4.1/ 5 overall

If you're using Supabase — or open to it — its built-in Auth is almost a no-brainer, because it's included rather than a separate bill. You get email/password, magic links, social logins and phone auth, tightly integrated with your Postgres database and row-level security, so permissions live right next to your data. It's open-source, so you can self-host the whole stack if you want. It's most compelling as part of the Supabase platform rather than a standalone auth service for a non-Supabase app. But for teams building on Supabase, getting production-grade auth folded into your backend at no extra cost is a genuine win.

3

WorkOS

4.1/ 5 overall

WorkOS is the pick when your real need is ticking the 'enterprise-ready' boxes big customers demand. Its AuthKit handles general user authentication with a famously generous free tier (free up to a million monthly active users), while its APIs make adding SAML SSO, SCIM directory sync and audit logs refreshingly painless — the stuff that usually takes months to build. For a SaaS startup chasing enterprise deals, that combination is a godsend. It's developer-focused and B2B-leaning rather than a consumer-app auth tool. But if you need both everyday auth and the enterprise features sales keeps asking for, WorkOS covers both beautifully.

4

Stytch

4.0/ 5 overall

Stytch is the modern, API-first auth platform with a particular strength in passwordless flows — magic links, one-time passcodes, passkeys, biometrics — and increasingly in fraud and bot prevention (device fingerprinting, risk signals). If you want to move beyond passwords or you're fighting abuse at signup, that focus is a real differentiator. It has a free tier and usage-based pricing as you grow. It's developer-oriented and you'll build more of the UI yourself than with Clerk's drop-in components. But for teams that want cutting-edge passwordless authentication and built-in fraud defenses from a flexible API, Stytch is a strong, forward-looking choice.

5

Keycloak

3.9/ 5 overall

Keycloak is the open-source heavyweight, backed by Red Hat and used in serious production everywhere. It does the lot — SSO, social login, SAML, OIDC, user federation, fine-grained authorization — and because you self-host it, there are no per-user fees at all, which is exactly why cost-conscious and privacy-conscious teams love it. The trade-off is real: you own the hosting, scaling, upgrades and security hardening, and the admin experience is more enterprise-dated than the slick hosted tools. But for teams with the ops capability who want total control and no usage-based billing, Keycloak is immensely powerful and free.

6

Ory

3.9/ 5 overall

Ory is the modern open-source answer for developers who find Keycloak a bit dated but still want to own their identity stack. It's a set of API-first, cloud-native components (Kratos for identity, Hydra for OAuth2/OIDC, Keto for permissions) that you compose into exactly the auth system you need, self-hosted or via Ory's managed cloud with usage-based pricing. That composability is powerful and clean. The catch is that it assumes real engineering comfort — you assemble more yourself than with a turnkey tool. But for developer teams who want open-source, no per-user lock-in and a modern architecture, Ory is one of the most elegant options going.