FusionAuth vs Rauthy
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?
FusionAuth
Complete authentication and authorization platform
VS
Rauthy
Lightweight OpenID Connect provider written in Rust
| Feature | FusionAuth | Rauthy |
|---|---|---|
| Category | Identity & SSO | Identity & SSO |
| License | Apache-2.0 | Apache-2.0 |
| Language | Dockerfile | Rust |
| Setup difficulty | Medium | Medium |
| Min. RAM | 1,024 MB | 128 MB |
| Deployment | docker, kubernetes, bare-metal | docker, binary |
| GitHub stars | ★ 241 | ★ 1,256 |
| First released | 2018 | 2023 |
| Replaces | Auth0, Okta | Keycloak, Auth0 |
Why pick each one
Choose FusionAuth if…
- Released under the Apache-2.0 license
- First-class Docker support for quick deployment
- Kubernetes-ready with Helm charts available
- Written in Dockerfile
Choose Rauthy if…
- Released under the Apache-2.0 license
- First-class Docker support for quick deployment
- Active community (1.3k GitHub stars)
- Written in Rust
Frequently asked questions
Is FusionAuth or Rauthy better?
Neither is universally better. Rauthy has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are FusionAuth and Rauthy free and open-source?
Yes. FusionAuth is licensed under Apache-2.0 and Rauthy under Apache-2.0. Both can be self-hosted at no software cost.
Can I run FusionAuth and Rauthy with Docker?
FusionAuth: yes. Rauthy: yes.