Overview
Clerk is an authentication and user-management platform built for React and Next.js, with polished pre-built UI components. It handles sign-in, user profiles, organizations and MFA with minimal setup, and is known for excellent developer experience. It offers a generous free tier (around 10,000 monthly active users) before paid plans.
Pre-built UI
Drop-in sign-in and user components.
React-first
Excellent Next.js and React support.
Organizations
Built-in multi-tenant support.
Pros
Cons
Key features
Pricing
Free
$0
Up to ~10,000 MAU
Pro
Usage-based
For growing apps
Best for
SaaS auth
Add login and user management fast.
Next.js apps
Drop-in components and middleware.
B2B apps
Manage organizations and roles.
Alternatives to Clerk
View all →Frequently asked questions
Is Clerk free?
Yes, Clerk has a free tier (around 10,000 monthly active users), with usage-based paid plans above that.
What is Clerk?
An authentication and user-management platform with pre-built UI, built for React and Next.js.
Does Clerk work with Next.js?
Yes, Clerk has first-class Next.js and React support.
Does Clerk support organizations?
Yes, it has built-in organization and multi-tenant features.
How does Clerk compare to Auth0?
Clerk is favored for developer experience and modern frameworks, while Auth0 is stronger for enterprise compliance and SSO.
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