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Clerk

Clerk provides user authentication, authorization, and user management APIs for web and mobile applications. · Clerk · Auth

Overview

Clerk offers a generous free tier for authentication and user management, making it easy to add secure login to your applications.

Good fit

Use Clerk when you need quick, secure user authentication and management for web or mobile apps with minimal backend setup.

  • web apps
  • mobile apps
  • MVPs
  • side projects

Not a fit

Avoid Clerk if you require full on-premise control, advanced enterprise SSO, or need to support more than 50,000 free users.

  • strict on-premise requirements
  • large-scale enterprise SSO
  • custom auth flows
Quickstart · 5 steps
  1. Sign up for a free Clerk account.
  2. Create a new application in the Clerk dashboard.
  3. Configure allowed redirect URLs and authentication settings.
  4. Install Clerk SDK in your app (e.g., via npm).
  5. Integrate Clerk components or APIs into your frontend.

Other free auth options

Supabase · Auth
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WSO2 · Auth
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