Best AWS CDK Nag Alternatives in 2026
The top AWS CDK Nag alternatives are Snyk IaC, KICS and Checkov: 15 IaC security scanners our editors would look at instead of AWS CDK Nag, in our ranking order.
AWS CDK Nag: Free, AWS-focused rule-pack scanning for CDK and CloudFormation compliance. Where it falls short: focused on AWS CDK and CloudFormation rather than broader IaC.
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Best forEnterprise IaC security with broad integrations
A broad IaC scanner with policy controls, workflow integrations, and a free starting tier.
- Custom policies
9.3/10★★★★★Visit Snyk -
Best forFree, broad open-source IaC scanning
A free, broad scanner for IaC security, compliance, misconfigurations and secrets.
- Custom policies
- Open-source option
9.1/10★★★★★Visit KICS -
Best forOpen-source multi-framework scanning
A self-hosted, multi-framework IaC scanner with broad policy and CI/CD coverage.
- Custom policies
- Open-source option
8.7/10★★★★☆Visit Checkov -
Best forIaC teams needing policy and drift management
A code-first IaC platform whose policy and drift controls deepen on paid plans.
- Drift detection
- Open-source option
8.5/10★★★★☆Visit Pulumi -
Best forTeams combining IaC and code security
Combines IaC checks with code, secrets, and dependency scanning in pull requests.
8.3/10★★★★☆Visit DeepSource -
Best forTeams securing Kubernetes beyond configuration scanning
A self-hosted scanner that extends Kubernetes checks into runtime monitoring and policy enforcement.
- Open-source option
8.1/10★★★★☆Visit Kubescape -
Best forKubernetes policy auditing and admission control
Focused Kubernetes auditing and admission control with flexible policy enforcement.
- Custom policies
- Open-source option
7.9/10★★★★☆Visit Polaris -
Best forTerraform linting and provider best practices
A free, local Terraform linter with cloud-provider rules, plugins, and autofixing.
7.8/10★★★★☆Visit TFLint -
Best forBroad open-source cloud and artifact scanning
A free, broad scanner for IaC, containers, repositories, secrets, licenses, and SBOMs.
- Open-source option
7.7/10★★★★☆Visit Trivy -
Best forLow-cost broad IaC policy scanning
Broad IaC policy scanning with a free tier and paid remediation workflows.
- Custom policies
7.6/10★★★★☆Visit Safeguard IaC -
Best forPolicy testing across CloudFormation and JSON IaC
A self-hosted policy scanner for CloudFormation, Terraform JSON, and Kubernetes.
- Open-source option
7.5/10★★★★☆Visit AWS Guard -
Best forTeams governing Azure Bicep and ARM templates
An open-source Azure scanner for Bicep and ARM governance, from templates to deployed resources.
- CI/PR integration
- Fix suggestions
- Custom policies
7.4/10★★★★☆Try PSRule for Azure -
Best forKubernetes YAML, Helm and Kustomize linting
An open-source scanner for Kubernetes configuration checks in local and CI workflows.
- Custom policies
- Open-source option
7.2/10★★★★☆Visit KubeLinter -
Best forCloudFormation security rule scanning
A focused, free scanner for finding common security issues in CloudFormation.
- Custom policies
- Open-source option
7.1/10★★★★☆Visit cfn-nag -
Best forSimple Kubernetes manifest quality checks
A free, open-source scanner for Kubernetes manifest quality checks in CI or a browser.
- CI/PR integration
- Fix suggestions
- Open-source option
7.0/10★★★★☆Visit kube-score
AWS CDK Nag Alternatives: Common Questions
What is the best alternative to AWS CDK Nag?
Snyk IaC: #1 in our IaC Security Scanners ranking, with an editor score of 9.3 out of 10. A broad IaC scanner with policy controls, workflow integrations, and a free starting tier.
Is there a free alternative to AWS CDK Nag?
Yes. Snyk IaC, KICS, Checkov, Pulumi and DeepSource have a free plan or a free tier (15 of the 15 alternatives on this page).
AWS CDK Nag vs Each Alternative
| # | Tool | Free plan | Paid from | IaC frameworks | Custom policies | CI/PR integration | Fix suggestions | Score |
|---|---|---|---|---|---|---|---|---|
| 13 | AWS CDK Nag | Yes | None | AWS CDK; CloudFormation templates | Yes | — | Yes | 7.3 |
| 1 | Snyk IaC | Yes | $25/user/mo | — | Yes | — | — | 9.3 |
| 2 | KICS | Yes | None | — | Yes | — | — | 9.1 |
| 3 | Checkov | Yes | None | — | Yes | — | — | 8.7 |
| 4 | Pulumi | Yes | $40/mo | — | — | — | — | 8.5 |
| 5 | DeepSource | Yes | $24/user/mo | — | — | — | — | 8.3 |
| 6 | Kubescape | Yes | None | — | — | — | — | 8.1 |
| 7 | Fairwinds Polaris | Yes | None | — | Yes | — | — | 7.9 |
| 8 | TFLint | Yes | None | — | — | — | — | 7.8 |
| 9 | Trivy | Yes | None | — | — | — | — | 7.7 |
| 10 | Safeguard IaC Security | Yes | $9/mo | — | Yes | — | — | 7.6 |
| 11 | AWS CloudFormation Guard | — | None | — | — | — | — | 7.5 |
| 12 | PSRule for Azure | Yes | None | Bicep, Azure Resource Manager templates | Yes | Yes | Yes | 7.4 |
| 14 | KubeLinter | — | None | — | Yes | — | — | 7.2 |
| 15 | cfn-nag | Yes | None | — | Yes | — | — | 7.1 |
| 16 | kube-score | Yes | None | Kubernetes YAML/JSON; Helm-rendered manifests; Kustomize output | No | Yes | Yes | 7.0 |
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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