Authgear 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?
Authgear
Open-source authentication and user management server
VS
FusionAuth
Complete authentication and authorization platform
| Feature | Authgear | FusionAuth |
|---|---|---|
| Category | Identity & SSO | Identity & SSO |
| License | Apache-2.0 | Apache-2.0 |
| Language | Go | Dockerfile |
| Setup difficulty | Hard | Medium |
| Min. RAM | 1,024 MB | 1,024 MB |
| Deployment | docker, kubernetes | docker, kubernetes, bare-metal |
| GitHub stars | ★ 1,951 | ★ 241 |
| First released | 2021 | 2018 |
| Replaces | Auth0, Firebase Auth | Auth0, Okta |
Why pick each one
Choose Authgear if…
- Released under the Apache-2.0 license
- First-class Docker support for quick deployment
- Kubernetes-ready with Helm charts available
- Active community (2k GitHub stars)
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 Authgear or FusionAuth better?
Neither is universally better. Authgear has the larger community, while FusionAuth is simpler to set up (medium difficulty). Choose based on the comparison table above and your own setup.
Are Authgear and FusionAuth free and open-source?
Yes. Authgear is licensed under Apache-2.0 and FusionAuth under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Authgear and FusionAuth with Docker?
Authgear: yes. FusionAuth: yes.