Clerk

Auth that actually ships with your UI

Next.js / Auth · Freemium

Reviewed 2026-08-18

What's Good

Integration with Next.js is exceptional: middleware handles route protection, hooks provide user state, and Server Components work seamlessly. Multi-factor authentication, social logins, and organization management are included.

The Catch

Clerk is a paid auth product with a free tier that evaporates as MAUs grow. You are outsourcing login UI and session logic; customization is the Clerk way or a fight. This is not the OSS auth library.

Verdict

Auth-as-a-feature ships faster than auth-as-a-library.

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HTML

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Next.js →

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