Deepfence ThreatMapper vs Open Policy Agent Gatekeeper

Deepfence ThreatMapper is a self-hosted security tool that discovers production workloads and ranks threats by exploit risk. It maps pods, containers, applications, and infrastructure, then generates runtime software bills of materials for running workloads and operating systems and checks them against multiple vulnerability feeds. It also detects exposed keys, tokens, and passwords in containers and host filesystems, and evaluates infrastructure settings against CIS, PCI-DSS, HIPAA, and other benchmarks. The Threat Graph links vulnerability, secret, and compliance findings with network flows, security groups, and live status. Its management console runs in containers on a Docker host or dedicated Kubernetes cluster, providing HTTPS administration and API automation. One console can manage different workload types across on-premise and cloud deployments. Documented integrations include Slack, PagerDuty, Jira, Splunk, ELK, Sumo Logic, and AWS S3; image-build scanning supports CircleCI, Jenkins, and GitLab. The project is free under the Apache 2 license. Windows Server support is experimental and not suitable for production use.

Open Policy Agent Gatekeeper is a free, open-source Kubernetes policy controller for Linux and self-hosted deployments. It runs as a validating and mutating webhook, enforcing CRD-based policies evaluated by Open Policy Agent. Validation constraints can deny requests, warn, run in dry-run mode or report violations without changing resources. Mutation policies can alter matching resources during admission before validation checks the final object. An audit function periodically evaluates existing cluster resources against constraints to identify pre-existing misconfigurations. The project includes an extensible policy library with parameterized examples, and provider connections to external data such as image registries and directory services. Named integrations or backed services include Azure Policy for Kubernetes, Google Kubernetes Engine Policy Controller, Rancher, AWS EKS Blueprints and Alibaba Cloud. Installation options include prebuilt, development or locally built images and Helm. Gatekeeper requires Kubernetes resources introduced in version 1.16 and cluster-admin permissions for installation. The gator CLI is documented as beta from version 3.11.