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Gatekeeper Library is a free policy management tool. FireMon Policy Workbench is a commercial policy management tool by FireMon. Compare features, ratings, integrations, and community reviews side by side to find the best policy management fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, company size fit, deployment model, here is our conclusion:
Platform engineers enforcing Kubernetes security policies at scale should choose Gatekeeper Library for its parameterized policy templates and native CRD integration, which let you define and extend controls without rebuilding from scratch. The 4,168 GitHub stars signal real adoption among teams actually running this in production, not just evaluating it. This is free, so cost isn't a barrier, but skip it if your security team needs policy management divorced from Kubernetes,Gatekeeper is admission control for K8s clusters, not a centralized policy engine for your entire infrastructure.
Enterprise and mid-market security teams managing multi-vendor firewall estates will find FireMon Policy Workbench essential for reducing policy sprawl before it becomes a compliance liability. The platform validates policies against PCI DSS, NIST, and DORA frameworks during design rather than after deployment, which means fewer audit findings and faster change cycles; combined with ITSM integration, this addresses the GV.PO and PR.PS gaps most organizations ignore until a breach forces remediation. Skip this if your firewall estate is small or standardized on a single vendor's management suite; the value scales with complexity.
Gatekeeper is a policy management tool for Kubernetes that provides an extensible, parameterized policy library and native Kubernetes CRDs for instantiating and extending the policy library.
Firewall policy design and automation platform for network security teams
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Common questions about comparing Gatekeeper Library vs FireMon Policy Workbench for your policy management needs.
Gatekeeper Library: Gatekeeper is a policy management tool for Kubernetes that provides an extensible, parameterized policy library and native Kubernetes CRDs for instantiating and extending the policy library..
FireMon Policy Workbench: Firewall policy design and automation platform for network security teams. built by FireMon. headquartered in United States. Core capabilities include Environment-aware policy recommendations, Guided policy design workspace, Continuous validation against compliance frameworks..
Both serve the Policy Management market but differ in approach, feature depth, and target audience.
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