zyphr — sessionhostapi.zyphr.devsession ~/alternatives/clerk/ready
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Alternatives

Best Clerk Alternatives in 2026

Clerk is excellent for React and Next.js sign-in UI. These seven options fit when your stack, your budget or your messaging needs point elsewhere.

dev@zyphr:~/zyphr$
// Why teams look for alternatives
  • A backend or game stack outside React, Next.js and native mobile, where Clerk's prebuilt components matter less.
  • Per-user pricing once you grow past the users included in the free and Pro plans.
  • Needing transactional email, push, SMS or webhooks alongside auth, which means a second and third vendor.
  • Wanting user data in your own database or on your own infrastructure.
dev@zyphr:~/zyphr$
// Quick picks
#OptionBest for
1ZyphrAuth plus email, push and webhooks in one API, on any stack
2Auth0Established teams that need the broadest enterprise feature set
3Better AuthTypeScript teams that want auth as a library in their own app
4Supabase AuthApps built on Supabase Postgres
5Firebase AuthenticationMobile-first apps on Firebase
6StytchPasswordless-first products and fraud-sensitive sign-up flows
7WorkOSB2B SaaS that must pass enterprise SSO and SCIM requirements

Last reviewed November 2026. Check each vendor's pricing page for current prices; they change often.

dev@zyphr:~/zyphr$
// Each option, honestly

1. Zyphr

A complete auth service (passkeys, social sign-in with Google, Apple, Facebook, GitHub and Microsoft, magic links, email and SMS codes, TOTP MFA, organizations (multiple per app from Pro), anonymous auth, RS256 JWTs with a public JWKS), plus the email, push, SMS, in-app and webhook delivery your auth flows need. Every sign-in and security feature is on every plan, 1,000 MAU and 1,000 emails a month free.

best for
Auth plus email, push and webhooks in one API, on any stack
watch out
No SAML, enterprise OIDC or SCIM yet, and MFA is TOTP with backup codes only. Password hashes cannot be imported yet, so password users set a new password once when you switch.

2. Auth0

Okta's identity platform: SAML and enterprise connections, Actions for extensibility, a large integration catalog and extensive compliance certifications.

best for
Established teams that need the broadest enterprise feature set
watch out
Cost rises steeply with MAU, and many B2B and security features sit on higher tiers.

3. Better Auth

Open-source, framework-agnostic TypeScript auth library with a plugin system (organizations, two-factor, passkeys and more) that stores users in your own database.

best for
TypeScript teams that want auth as a library in their own app
watch out
A library, not a service: you host it, own the database and apply security updates, and handle email delivery yourself unless you add their paid Infrastructure service.

4. Supabase Auth

Open-source auth built into Supabase, with identity wired into Postgres Row Level Security. Hosted or self-hosted.

best for
Apps built on Supabase Postgres
watch out
Most valuable when Supabase is also your database; no prebuilt UI as polished as Clerk's.

5. Firebase Authentication

Google's auth with mature iOS, Android, Flutter and Unity SDKs, a generous free tier and FirebaseUI drop-in screens.

best for
Mobile-first apps on Firebase
watch out
Ties you to Firebase and Google Cloud; B2B features such as multi-tenancy and SAML need the Identity Platform upgrade.

6. Stytch

API-first auth with strong passwordless options, a separate B2B product with organizations and SSO, and device fingerprinting for bot and fraud detection.

best for
Passwordless-first products and fraud-sensitive sign-up flows
watch out
Consumer and B2B are separate products with different APIs, so pick carefully up front.

7. WorkOS

Enterprise SSO, directory sync, audit logs and a self-serve admin portal for your customers' IT teams, plus AuthKit for general sign-in.

best for
B2B SaaS that must pass enterprise SSO and SCIM requirements
watch out
Built around enterprise readiness; consumer apps will not use much of it.
dev@zyphr:~/zyphr$
// Frequently asked questions
What is the best Clerk alternative?

For auth plus transactional messaging on any stack, Zyphr (1,000 MAU and 1,000 emails a month free). For enterprise SSO, WorkOS or Auth0. To keep auth inside your own TypeScript app and database, Better Auth. For Supabase or Firebase projects, their built-in auth.

Is there an open-source Clerk alternative?

Yes: Better Auth (a TypeScript library), Supabase Auth (self-hostable), and Keycloak (a full self-hosted identity server). Each moves hosting and operations onto your team.

Does Zyphr have prebuilt sign-in components like Clerk?

Zyphr provides client auth SDKs for React and React Native and a full REST API, so you build the sign-in screens in your own design system. If drop-in UI is the main thing you need, Clerk remains a strong choice.

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// Get started

Auth and messaging, one API

1,000 MAU and 1,000 emails a month free. No credit card.