Best Auth0 Alternatives

Looking for a different authentication solution? These are the most trusted alternatives to Auth0 based on features, pricing, and use-case fit.

Why teams look for alternatives

- Complex pricing
- Steeper learning curve
- UI feels dated compared to Clerk

Quick comparison

Tool	Best For	Free Tier	Starting Price
Clerk Drop-in authentication for modern apps	React/Next.js apps	Yes	Free	Try It
Supabase Auth Open source auth with PostgreSQL	Supabase users	Yes	Free	Try It
Firebase Auth Google's authentication service	Mobile apps	Yes	Free	Try It
Kinde Modern auth built for growth	Startups wanting auth + feature flags	Yes	Free	Try It

Auth0 alternative picks

Clerk

Drop-in authentication for modern apps

Free tier

Clerk is the best choice for React/Next.js developers who want beautiful auth out of the box. The DX is unmatched, but costs can add up.

React/Next.js appsStartups wanting fast authApps needing org management

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Supabase Auth

Open source auth with PostgreSQL

Free tier

Supabase Auth is the best value if you're already using Supabase. The free tier is unbeatable and RLS integration is powerful.

Supabase usersBudget-conscious projectsSelf-hosting needs

Full Review Compare

Firebase Auth

Google's authentication service

Free tier

Firebase Auth is excellent for mobile apps and projects already in the Google ecosystem. Hard to beat on price.

Mobile appsFirebase ecosystemGoogle Cloud users

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Kinde

Modern auth built for growth

Free tier

Kinde is a great up-and-comer with bundled feature flags. Worth considering if you need both auth and feature management.

Startups wanting auth + feature flagsNext.js appsBudget-conscious teams

Full Review Compare

Head-to-head comparisons

Auth0 vs Clerk Auth0 vs Supabase Auth Auth0 vs Firebase Auth Auth0 vs Kinde

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