Clerk | Authentication and User Management

Clerk raises $50m Series C

Need more than sign-in? Clerk gives you full stack auth and user management — so you can launch faster, scale easier, and stay focused on building your business.

Build with agents

❯Add Clerk auth to my app: clerk.com/SKILL.md

Trusted by fast-growing companies around the world.

Clerk Components

Pixel-perfect UIs, embedded in minutes.

Drop-in UI components for authentication, profile management, organization management, and billing.

Explore all components

User Authentication

Add user <SignUp/> and <SignIn/>, provide account access through a dropdown menu, and manage profile and security settings.

Multi-Tenancy

Allow users to create new organizations, switch between accounts, manage settings and billing, and view memberships and invitations.

Billing

Display pricing plans with feature comparisons and subscription options to help your users choose the right plan for their needs.

Account

Manage your account info.

Profile

Create Organization

Pricing Plans

Multi-tenancy Features

User Authentication

Clerk provides everything you need for authentication:

Multifactor Authentication

Fraud and Abuse Prevention

Advanced security

Device Tracking:

Subscription Billing Component

Starter Acme Plan

Pro Acme Plan

Frameworks

Build with SDKs for modern frameworks.

Integrations

Integrate with the tools you love.

User Testimonials

"The best practices built in to their <SignIn /> and <UserButton /> components would take months to implement in-house, yet no sacrifice is made in terms of Enterprise extensibility or customization to your brand."

— Guillermo Rauch, Vercel, CEO

"I implemented authentication in my starter app using Clerk's custom flow setup."

— ronald solticzki, @RSolticzki