Authorizer vs ZITADEL
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?
Authorizer
Open-source auth solution with a ready-made UI
VS
ZITADEL
Cloud-native identity infrastructure with multi-tenancy built in
| Feature | Authorizer | ZITADEL |
|---|---|---|
| Category | Identity & SSO | Identity & SSO |
| License | Apache-2.0 | Apache-2.0 |
| Language | Go | Go |
| Setup difficulty | Easy | Medium |
| Min. RAM | 256 MB | 512 MB |
| Deployment | docker, binary | docker, kubernetes, binary |
| GitHub stars | ★ 1,977 | ★ 14,671 |
| First released | 2021 | 2020 |
| Replaces | Auth0, Firebase Authentication | Auth0, Okta, Firebase Auth |
Why pick each one
Choose Authorizer if…
- Released under the Apache-2.0 license
- Easy to set up — beginner-friendly
- First-class Docker support for quick deployment
- Active community (2k GitHub stars)
Frequently asked questions
Is Authorizer or ZITADEL better?
Neither is universally better. ZITADEL has the larger community, while Authorizer is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.
Are Authorizer and ZITADEL free and open-source?
Yes. Authorizer is licensed under Apache-2.0 and ZITADEL under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Authorizer and ZITADEL with Docker?
Authorizer: yes. ZITADEL: yes.