The best Clerk alternatives for founders. Auth tools compared - Auth0, Supabase Auth, Firebase Auth, and more.
Clerk makes auth beautiful - drop-in components, user management UI, and great React integration. But the per-MAU pricing gets expensive at scale, and you're locked into their components. If you want more control, lower costs, or a different approach to authentication, these alternatives are worth considering.
| Tool | Pricing | Verdict | Best Stage |
|---|---|---|---|
| Clerk | Freemium | - | - |
| Auth0 | Freemium | - | - |
| Supabase Auth | Free | - | - |
| Firebase Auth | Free | - | - |
Drop-in auth with beautiful components. User management UI that actually looks good out of the box.
Visit Clerk →
Enterprise auth that handles every edge case. Overkill for side projects, essential for serious apps.
Clerk vs Auth0 → Visit Auth0 →
Free auth that comes with Supabase. Social logins, magic links, RLS. No-brainer if you're there.
Clerk vs Supabase Auth → Visit Supabase Auth →
Google's auth service. Dead simple setup, tons of providers, free tier handles most startups. The easy button.
Visit Firebase Auth →Want to explore all 301+ tools we've reviewed?
Browse All Tools →