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Clerk alternatives

Comprehensive authentication and user management platform designed for modern web applications.

Clerk compared with its alternatives on free plan, learning curve and setup time
ClerkThis toolComprehensive authentication and user management platform designed for modern web applications.
YesEasy5-10 minutes
Auth0Identity platform for authentication, authorization, SSO, and social login in apps.
—Medium5 minutes
Auth.jsOpen-source authentication library for Next.js and modern JavaScript frameworks.
YesEasy5-10 minutes
Better AuthTypeScript authentication framework with plugins for sessions, OAuth, and passkeys.
YesMediumQuick setup with CLI initialization
JWTJSON Web Token standard for compact, signed claims used in stateless API authentication.
YesEasy—
KeycloakOpen-source identity broker with SSO, OIDC, SAML, and user federation for enterprises.
YesMedium30 minutes to 2 hours depending on deployment method
WorkOSModern API platform that enables developers to quickly add enterprise features to their applications.
YesEasyMinutes for basic SSO integration
AI Starter KitNext.js starter kit to launch AI SaaS fast with auth, payments, and dashboards.
———
AIFastFast-launch AI SaaS boilerplate with 15+ pre-built AI tools, auth, payments, and dashboard.
YesEasy—
BuilderBoxBuilder Box helps developers launch full-stack SaaS apps faster with ready-to-use auth, payments, and AI tools.
NoMedium15-30 minutes
GravityGravity helps you launch a SaaS fast with auth, payments, and dashboards ready.
YesMediumMinutes with setup wizard; full SaaS running in hours
NextUpKitBudget-friendly Next.js starter. Auth, payments, modern stack.
YesEasyMinutes to get started
OpenSaaSAn open-source SaaS starter kit that helps you build, launch, and monetize full-stack apps fast.
YesMediumUnder 5 minutes to get started; MVP deployable in days

How these alternatives were chosen

Tools Clerk names as alternatives that this directory also publishes, followed by others in Auth. The order is not a ranking, and "—" means we have not checked that field — not that the answer is no.

Clerk also lists Firebase Authentication, Supabase Auth, NextAuth.js, Okta as alternatives. Those are not in this directory yet, so there is nothing to compare — and nothing to link to.