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3.2Tool Comparison
| Tool | Language | Scope | Speed | Custom Rules | CI Integration |
|---|---|---|---|---|---|
| tfsec | Go | Terraform only | Very fast | Rego, YAML | Native GitHub Action |
| Checkov | Python | Terraform, CloudFormation, K8s, Helm, Dockerfiles | Fast | Python | All major CI systems |
| Trivy (config mode) | Go | Terraform, CloudFormation, K8s, Dockerfiles | Very fast | Rego | GitHub Action, GitLab template |
| OPA/Conftest | Rego | Any structured data (JSON, YAML, HCL) | Fast | Rego (native) | Any CI via CLI |
| Bridgecrew | SaaS + Python | Multi-framework | Fast | Python (extends Checkov) | Full platform + CLI |
| Snyk IaC | SaaS + CLI | Terraform, CloudFormation, K8s, ARM | Moderate | UI-based | All major CI systems |
The choice between these tools depends on your stack, team skills, and compliance requirements. Many teams use multiple tools in combination -- for example, Checkov for broad coverage plus OPA for custom organizational policies.