Keycloak vs Traefik Forward Auth
A side-by-side comparison of two self-hosted identity & sso options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Keycloak
Open-source identity and access management for modern apps
VS
Traefik Forward Auth
Minimal forward authentication service for Traefik
| Feature | Keycloak | Traefik Forward Auth |
|---|---|---|
| Category | Identity & SSO | Identity & SSO |
| License | Apache-2.0 | MIT |
| Language | Java | Go |
| Setup difficulty | Hard | Easy |
| Min. RAM | 1,024 MB | 64 MB |
| Deployment | docker, kubernetes, bare-metal | docker, binary |
| GitHub stars | ★ 36,058 | ★ 2,390 |
| First released | 2014 | 2018 |
| Replaces | Okta, Auth0, Microsoft Entra ID | Cloudflare Access |
Why pick each one
Choose Traefik Forward Auth if…
- Released under the MIT license
- Easy to set up — beginner-friendly
- First-class Docker support for quick deployment
- Active community (2.4k GitHub stars)
Frequently asked questions
Is Keycloak or Traefik Forward Auth better?
Neither is universally better. Keycloak has the larger community, while Traefik Forward Auth is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.
Are Keycloak and Traefik Forward Auth free and open-source?
Yes. Keycloak is licensed under Apache-2.0 and Traefik Forward Auth under MIT. Both can be self-hosted at no software cost.
Can I run Keycloak and Traefik Forward Auth with Docker?
Keycloak: yes. Traefik Forward Auth: yes.