Auth0 vs Keycloak: Which Should You Choose in 2026?
Choosing between Auth0 and Keycloak comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Auth0
Identity platform for developers
Best for you if:
- 0
- • You need API tools features specifically
- • Industry-leading identity platform
- • Authentication and authorization as a service
Keycloak
Open-source identity and access management
Best for you if:
- 0
- • You need something completely free
- • You need password managers features specifically
- • Keycloak is an open-source identity and access management solution
- • It provides SSO, social login, and user federation for applications and services
| At a Glance |  Auth0 | |
|---|---|---|
Price | Free + Paid | Free |
Best For | API Tools | Password Managers |
Rating | - | - |
| Feature | Auth0 | Keycloak |
|---|---|---|
| Pricing Model | Freemium | Free |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | API ToolsIdentity & Access | Password ManagersIdentity & Access |
How Auth0 and Keycloak Compare
Auth0
Identity platform for developers
Free tier available
Keycloak
Open-source identity and access management
Free
Auth0 is a API tools tool. Keycloak is in password managers.
Who Should Use What?
On a budget?
Keycloak is free. Auth0 is freemium.
Go with: Keycloak
Want the highest-rated option?
Neither has user reviews yet.
Go with: Auth0
Value user reviews?
Neither has user reviews yet.
Go with: Auth0
3 Questions to Help You Decide
What's your budget?
Auth0 is freemium. Keycloak is free. Go with Keycloak if free matters most.
What's your use case?
Auth0 is a API tools tool. Keycloak is in password managers. Pick the category that matches your needs.
How important are ratings?
Neither has user reviews yet.
Key Takeaways
Auth0
- 0
- Free tier available
- Our pick for this comparison
Keycloak
- Completely free
- Better fit for password managers
The Bottom Line
Auth0 is our pick. That said, Keycloak is free, hard to beat on price.
Frequently Asked Questions
Is Auth0 or Keycloak better?
Auth0 is rated high in our evaluation. Auth0 is freemium and Keycloak is free.
What are Auth0 and Keycloak used for?
Auth0: Identity platform for developers. Keycloak: Open-source identity and access management.
What does Auth0 cost vs Keycloak?
Auth0 is freemium (free tier + paid plans). Keycloak is completely free. Visit their websites for detailed pricing.