Best open-source vulnerability management tools

Open-source vulnerability management tools you can self-host and inspect. A neutral list of the open-source vulnerability management options in our directory, compared on capabilities, deployment, and sources. We do not crown a single winner; tools are listed alphabetically.

3 tools listed|2026|No editorial scoring

What this shortlist looks at

Tools listed here

Greenbone OpenVAS

Security teams wanting a free, open-source vulnerability scanner with no licensing costs and full customization control

The most widely used open-source vulnerability scanner with 100,000+ network vulnerability tests

The most widely used open-source vulnerability scanner with 100,000+ network vulnerability tests

Nuclei

Security teams and researchers wanting a fast, customizable, template-driven vulnerability scanner for web and infrastructure testing

Fast, template-based open-source vulnerability scanner with 8,000+ community-contributed detection templates

Fast, template-based open-source vulnerability scanner with 8,000+ community-contributed detection templates

Trivy

DevOps and platform engineering teams that need a fast, open-source vulnerability scanner for containers and Kubernetes environments with zero configuration overhead

Open-source vulnerability scanner for containers, file systems, IaC, and Kubernetes with zero-config setup

Open-source vulnerability scanner for containers, file systems, IaC, and Kubernetes with zero-config setup