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Clerk

iamBest for: SaaS startups and developers building B2B or B2C apps with React/Next.js
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Clerk is a developer-focused authentication platform handling sign-up, sign-in, MFA, and user management via pre-built React components and a hosted UI. Free up to 10,000 monthly active users; Pro at $25/month adds custom domains and advanced features. Built specifically for Next.js and React applications.

★★★★★4.6G2
202050k+Free plan
Expert Take

Clerk is the fastest path to production authentication for React/Next.js apps - the developer experience is genuinely better than Auth0 for new projects. Switch to a more flexible solution when you need complex RBAC, enterprise SAML SSO, or per-organization configuration that Clerk's pricing makes expensive at scale.

· Expert analysis by Oleh Kem, Founder, ComparEdge

Quick Verdict

One of the most capable iam platforms available for free, trusted by SaaS startups and developers building B2B or B2C apps with React/Next.js.

4.6G2 Rating
Best for: SaaS startups and developers building B2B or B2C apps with React/Next.js From $25/mo

Top Pros

  • Stunning DX — auth UI in minutes with React components
  • Generous free tier (10k MAU)
  • Built-in organization/multi-tenancy support

Watch Out For

  • Pricing jumps significantly beyond free tier at scale
  • Less suitable for non-React/JS stacks

Frequently Asked Questions

Yes, Clerk offers a free plan. Paid plans start at $25/month with more features.
Reviewed by Oleh KemExpert verified·Last updated May 13, 2026·Our methodology