Best Clerk Alternatives & Competitors in 2026

ZITADEL

Open-source, multi-tenant identity platform for authn, authz, and SSO.

Okta Auth0

Identity and access management platform for authentication and authorization

FusionAuth

AuthN, AuthZ, and identity management you can deploy anywhere and control end to end.

Tesseral

B2B user management platform with auth, SSO, SCIM, RBAC, and API security

Descope CIAM Platform

No/low-code CIAM platform for auth, SSO, MFA, and user management.

Auth0 Platform

Developer-focused customer identity platform for authentication & authorization

Ory CIAM

Customer Identity and Access Management platform with OAuth 2.0 and OIDC

LoginRadius Customer Identity

Customer identity and access management platform for businesses

Ubisecure CIAM

CIAM platform for customer identity verification, access management, and SSO

Transmit Security

IAM platform offering CIAM, passwordless auth, and fraud prevention.

VU Security

CIAM and digital identity platform for fraud prevention and user lifecycle mgmt.

Hanko

Open-source auth platform with passkeys, OAuth, and 2FA for web apps.

Rownd

Auth platform with passwordless sign-in and private AI infra for apps.

Ory B2B IAM

B2B IAM platform with self-service onboarding and granular access control

Ory Network

Fully managed IAM platform with auth APIs, passkeys, and access control

Ubisecure Identity Platform

Customer and B2B identity management platform with CIAM and IAM capabilities

Frontegg CIAM

Customer identity platform with SSO, SCIM, and multi-tenant management

Simeio Customer Identity & Access Management (CIAM)

Managed CIAM service for securing customer digital access and experiences

PropelAuth Security

Authentication service with built-in security features and compliance certifications

SlashID Identity Management

Identity management platform with biometric auth and multi-region support

Journey Trusted Identity Platform

Omnichannel identity platform for biometric auth, KYC, and secure transactions.

Strivacity CIAM Platform

SaaS CIAM platform for managing customer, partner, and AI agent identities.

Fortytwo Labs π-Control

Cryptographic identity platform for authentication, transaction security

OpenIAM Customer IAM

Customer IAM platform for managing external identities with SSO and MFA

OwnID Trust Auth

Passwordless authentication platform using passkeys and biometrics

FingerprintJS

FingerprintJS is a client-side browser fingerprinting library that provides a unique visitor identifier unaffected by incognito mode.