Apereo CAS 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?
Apereo CAS
Enterprise single sign-on server for web applications
VS
Traefik Forward Auth
Minimal forward authentication service for Traefik
| Feature | Apereo CAS | 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 | ★ 11,354 | ★ 2,390 |
| First released | 2004 | 2018 |
| Replaces | Okta, Ping Identity | Cloudflare Access |
Why pick each one
Choose Apereo CAS if…
- Mature SSO with broad protocol support
- Widely adopted in academia
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 Apereo CAS or Traefik Forward Auth better?
Neither is universally better. Apereo CAS 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 Apereo CAS and Traefik Forward Auth free and open-source?
Yes. Apereo CAS is licensed under Apache-2.0 and Traefik Forward Auth under MIT. Both can be self-hosted at no software cost.
Can I run Apereo CAS and Traefik Forward Auth with Docker?
Apereo CAS: yes. Traefik Forward Auth: yes.