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Open-source Auth0 alternatives

3 self-hostable options to consider

Replace Auth0 with an open-source tool you can host and control. Compare features, licenses, and community activity below.

Quick answer

The best open-source Auth0 alternatives are Supabase, Appwrite, and Better Auth. All 3 are free, open source, and self-hostable — compare their features, licenses, and GitHub activity below.

3 tools
Supabase logo

Supabase

Alternative to Firebase, Auth0

The open-source Firebase alternative.

Open SourceApache 2.075K
Appwrite logo

Appwrite

Alternative to Firebase, Auth0

A complete backend, self-hosted in minutes.

Open SourceBSD 3-Clause47K
BA

Better Auth

Alternative to Clerk, Auth0

Comprehensive, framework-agnostic auth for TypeScript.

Open SourceMIT28K

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