Clerk

Founded by Colin Sidoti & Braden Sidoti in 2019

Complete developer-first user authentication and management platform.

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Cost

Free Tier, Paid

Rating

★ People love it

Time to value

Quick Setup (< 1 hour)

Use Clerk to add secure, customizable sign-up, sign-in, user profiles, multi-factor auth, and session management via pre-built UI components and APIs. It supports social login, Web3 wallets, RBAC, and self-serve admin features like impersonation and bans. Ideal for modern web apps built with frameworks like React, Next.js, Remix, or backend stacks using Node, Go, or Rails.

What Clerk does

Embed authentication UI via components like <SignIn>, <SignUp>, <UserButton>Enable multi-factor auth, session revocation, device trackingConfigure social SSO (Google, GitHub, LinkedIn, Slack, etc.)Manage teams via organization and RBAC supportImpersonate users and manage accounts via admin dashboardProtect front-end and back-end routes using clerkMiddleware and auth() helpersPixel-perfect embeddable UI componentsSession management with revocation & device monitoringMFAs: TOTP, SMS, authenticator apps, backup codesOrganization support with RBAC and invitation flowsFraud prevention (disposable email, anti-bot heuristics)Hosted on your domain with secure cookies

Tutorials & Demos

Frequently asked

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StripeGitHubReact NativeSlack

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