Best Open Source Alternatives to Auth0
Looking to break free from Auth0? Browse vetted open-source software that replaces Auth0 with self-hosting support, complete data custody, and transparent code.
Open-Source Replacements for Auth0
Ranked by community stars and adoption
Passkeys, SSO, and MFA without vendor lock-in
Secure, policy-based access control for modern applications
Build scalable authorization in minutes, not months
Take control of your identity with a secure, flexible solution
Managed identity and access management for any app
Framework-agnostic authentication for TypeScript applications
Modular auth, payments, emails, and analytics for your product
Secure authentication and access control made simple
Secure, seamless authentication for modern applications
A certified and battle-tested identity solution
Passwordless OIDC provider built for self-hosters
Secure, customizable authentication for your applications
Secure, customizable identity infrastructure for developers
Authorization administration framework (Open Policy)
Enterprise Readiness made simple
Authorization and access control as a service
User authentication and session management framework
Access control for AI agents your customers log in with
Why Teams Switch from Auth0 to Open Source
Proprietary SaaS platforms often lock your data behind rigid APIs, increase renewal costs year-over-year, and restrict enterprise customization. By contrast, open-source alternatives offer:
Full Data Sovereignty
Your customer data never leaves your VPC. Run database migrations, run local backups, and comply with GDPR/HIPAA without enterprise tier upsells.
Predictable Economics
Pay for raw cloud compute (e.g. AWS or Hetzner VPS) rather than paying $20 to $50 per user seat every single month as your headcount expands.
Custom Integrations
Audit the source code, build custom plugins, and write webhooks directly into internal company services without artificial rate limits.
Zero Vendor Risk
No sudden pricing model changes, feature deprecations, or sudden API shutdowns. Your software operates independently forever.
Frequently Asked Questions
Everything you need to know about switching from Auth0 to self-hosted open-source software, data backups, and private cloud deployment.
What is the best open source alternative to Auth0?
The most widely adopted open-source alternative to Auth0 is Hanko, with over 9.1K GitHub stars. Review the full list above to compare features and licensing.
Can I self-host alternatives to Auth0 on my own cloud?
Yes. All tools listed here offer self-hosted deployment via Docker, Docker Compose, Helm charts, or Kubernetes on AWS, Hetzner, GCP, DigitalOcean, or on-premise hardware.
Can Startupbricks help deploy and manage our migration?
Yes. Startupbricks engineers handle infrastructure provisioning, data migration, automated encrypted backups, and monitoring for teams switching from proprietary software like Auth0 to self-hosted open-source stacks.
Explore Other Popular Proprietary Alternatives
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