OPA, the Open Policy Agent, decouples policy from application logic. Authorization rules are written in Rego and enforced consistently across Kubernetes, APIs, and CI/CD pipelines. Platform and security teams use it to manage policy in one place rather than inside each service. The project is available at openpolicyagent.org.
How OPA compares with its closest alternatives
4 of the 5 closest alternatives have a free plan, as OPA does. 4 of the 5 offer an API, as OPA does. OPA offers a desktop app. Of the alternatives, 3 offer a desktop app. OPA was founded in 2016; the alternatives were founded between 2018 and 2025. The alternatives with a known headquarters are in the United States and Israel.
Market position · Security
How OPA compares in Security
OPA has moderate opportunity and sits in the bottom third of 361 live Security tools on FalcoScan. Across Security, the average opportunity score is 70.4 and the average saturation score 33. FalcoScan rates OPA's own market position as contested. 121 of the 361 operating Security tools have hot momentum, and FalcoScan has recorded 1 shutdown in the category.
The closest alternatives to OPA that are still running, matched on the AI capabilities, uses and audience they share, are Mondoo, Comp AI, Tekton, Trivy, and Wiz.
Is OPA still running?
Yes. As of 2 November 2026, FalcoScan lists OPA as operating at openpolicyagent.org.
Does OPA have an API?
Yes. OPA offers an API.
Who is OPA for?
OPA is built for platform engineers and security teams.
How do I sign in to OPA?
Sign in on OPA's own website, openpolicyagent.org. FalcoScan reviews OPA but does not run its accounts, so logins, passwords and billing are handled by OPA directly.