Open Policy Agent vs Topaz
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?
Open Policy Agent
General-purpose policy engine for cloud-native stacks
VS
Topaz
Open-source authorization with fine-grained access control
| Feature | Open Policy Agent | Topaz |
|---|---|---|
| Category | Identity & SSO | Identity & SSO |
| License | Apache-2.0 | Apache-2.0 |
| Language | Go | Go |
| Setup difficulty | Medium | Medium |
| Min. RAM | 256 MB | 256 MB |
| Deployment | docker, kubernetes, binary | docker, binary |
| GitHub stars | ★ 12,086 | ★ 1,355 |
| First released | 2016 | 2022 |
| Replaces | AWS IAM policies | Auth0 FGA |
Why pick each one
Choose Open Policy Agent if…
- Released under the Apache-2.0 license
- First-class Docker support for quick deployment
- Kubernetes-ready with Helm charts available
- Mature project with 12.1k GitHub stars
Choose Topaz if…
- Released under the Apache-2.0 license
- First-class Docker support for quick deployment
- Active community (1.4k GitHub stars)
- Written in Go
Frequently asked questions
Is Open Policy Agent or Topaz better?
Neither is universally better. Open Policy Agent has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Open Policy Agent and Topaz free and open-source?
Yes. Open Policy Agent is licensed under Apache-2.0 and Topaz under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Open Policy Agent and Topaz with Docker?
Open Policy Agent: yes. Topaz: yes.
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