Casbin vs FusionAuth
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?
Casbin
Authorization library supporting many access control models
VS
FusionAuth
Complete authentication and authorization platform
| Feature | Casbin | FusionAuth |
|---|---|---|
| Category | Identity & SSO | Identity & SSO |
| License | Apache-2.0 | Apache-2.0 |
| Language | Go | Dockerfile |
| Setup difficulty | Medium | Medium |
| Min. RAM | 128 MB | 1,024 MB |
| Deployment | source | docker, kubernetes, bare-metal |
| GitHub stars | ★ 20,311 | ★ 241 |
| First released | 2017 | 2018 |
| Replaces | Auth0 RBAC | Auth0, Okta |
Why pick each one
Choose Casbin if…
- Released under the Apache-2.0 license
- Mature project with 20.3k GitHub stars
- Written in Go
- Tiny footprint — runs in 128 MB RAM
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
Frequently asked questions
Is Casbin or FusionAuth better?
Neither is universally better. Casbin has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Casbin and FusionAuth free and open-source?
Yes. Casbin is licensed under Apache-2.0 and FusionAuth under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Casbin and FusionAuth with Docker?
Casbin: check the project docs for container support. FusionAuth: yes.