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Switching away from Auth0? Read the migration guide →

Free Alternatives to Auth0

Why pay for Auth0? Here are 3 free and open-source alternatives that deliver similar or better functionality.

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Choosing a free security alternative to Auth0

Auth0 is commonly evaluated by security teams and independent creators looking for a capable workflow. This directory compares 3 alternatives so you can review features, pricing context, maintenance signals, and the practical trade-offs before switching.

The latest pricing information for Auth0 is $23/mo according to the latest directory review. The listed alternatives include Keycloak, OAuth2 Server, GLUU. Availability and feature limits can change, so review the official project page before moving production work or sensitive data.

Start with the option that best matches your required workflow, operating system, collaboration needs, and migration budget. Open-source tools may require more setup, while hosted free plans can impose limits on storage, usage, or team members.

Last verified

2026-09-14

Working links

3 of 3 checked

Community signal

Community data pending

Quick Verdict

Keycloak and 2 other free alternatives provide similar functionality to Auth0 without the $23/monthly. Perfect for individuals and teams looking to reduce software costs while maintaining productivity.

Who should use these free alternatives?

Perfect For

  • ✓Individual users and small teams
  • ✓Developers and creators on a budget
  • ✓Privacy-conscious professionals
  • ✓Anyone looking to reduce software costs

Consider Limitations

  • !Large enterprises requiring vendor support contracts
  • !Teams needing guaranteed uptime SLAs
  • !Organizations with complex compliance needs
  • !Users requiring extensive third-party integrations

Recommended Free Alternatives

Best Overall
1
Free
Keycloak logo

Keycloak

Last checked Sep 2026

An open-source identity and access management solution

Try Keycloak Free

No credit card required

2
Free
OAuth2 Server logo

OAuth2 Server

Last checked Sep 2026

A free, open-source OAuth 2.0 server implementation

Try OAuth2 Server Free

No credit card required

3
Free
GLUU logo

GLUU

Last checked Sep 2026

An open-source identity and access management platform

Try GLUU Free

No credit card required

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Frequently Asked Questions

What are the best free alternatives to Auth0?
The best free alternatives to Auth0 include Keycloak, OAuth2 Server, GLUU. All alternatives are verified as genuinely free (not freemium or free trials) and are actively maintained by the open-source community.
Is Auth0 worth paying for in 2026?
That depends on your specific needs. Auth0 offers premium features and polished UX, but for most users, the free alternatives listed on this page provide comparable functionality at $0. We recommend trying the free options first before committing to a paid subscription.
Are these Auth0 alternatives really free?
Yes. Every alternative listed has been verified as genuinely free. Many are open-source (MIT, Apache, or GPL licensed), meaning you can use them commercially without restrictions. Some offer optional paid tiers for enterprise features, but the core functionality is always free.
How often are these alternatives updated?
Our directory is updated daily by an AI-powered system that discovers new tools, checks existing ones, and verifies that URLs are still active. Each alternative shows a "Last checked" date indicating when it was last reviewed. Star counts for GitHub-hosted alternatives are refreshed every day.
Can I use these free security tools commercially?
Most of the alternatives listed can be used commercially. Open-source tools with permissive licenses (MIT, Apache 2.0, BSD) have no restrictions on commercial use. Tools with copyleft licenses (GPL) may require you to open-source derivative works. Always check each tool's individual license before deploying in production.

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