Keycloak vs Duo Security: Which Should You Choose in 2026?
Choosing between Keycloak and Duo Security 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.
By Toolradar Team · Last updated May 6, 2026 · Methodology
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Keycloak
Open-source identity and access management
Best for you if:
- 0
- • You need something completely free
- • Keycloak is an open-source identity and access management solution
- • It provides SSO, social login, and user federation for applications and services
Duo Security
Multi-factor authentication for enterprises
Best for you if:
- 0
- • Duo Security is a multi-factor authentication platform for securing access to applications
- • It provides 2FA, device trust, and single sign-on with easy deployment across any app
| At a Glance |  Duo Security | |
|---|---|---|
Price | Free | Free + Paid |
Best For | Password Managers | Password Managers |
Rating | — | — |
| Feature | Keycloak | Duo Security |
|---|---|---|
| Pricing Model | Free | Freemium |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | Password ManagersIdentity & Access | Password ManagersIdentity & Access |
How Keycloak and Duo Security Compare
Keycloak
Open-source identity and access management
Free
Duo Security
Multi-factor authentication for enterprises
Free tier available
Who Should Use What?
On a budget?
Keycloak is free. Duo Security is freemium.
Go with: Keycloak
Want the highest-rated option?
Neither has user reviews yet.
Go with: Keycloak
Value user reviews?
Neither has user reviews yet.
Go with: Keycloak
3 Questions to Help You Decide
What's your budget?
Keycloak is free. Duo Security is freemium. Go with Keycloak if free matters most.
What's your use case?
Both are password managers tools. Compare their specific features to decide.
How important are ratings?
Neither has user reviews yet.
Key Takeaways
Keycloak
- 0
- Completely free
- Our pick for this comparison
Duo Security
The Bottom Line
Keycloak is our pick.
Frequently Asked Questions
Is Keycloak or Duo Security better?
Keycloak is rated high in our evaluation. Keycloak is free and Duo Security is freemium.
What are Keycloak and Duo Security used for?
Keycloak: Open-source identity and access management. Duo Security: Multi-factor authentication for enterprises.
What does Keycloak cost vs Duo Security?
Keycloak is completely free. Duo Security is freemium (free tier + paid plans). Visit their websites for detailed pricing.