Top SECURITY-SCANNER GitHub Repositories & Tools (2026)

The ZAP by Checkmarx Core project

Nuclei is a fast, customizable vulnerability scanner powered by the global security community and built on a simple YAML-based DSL, enabling collaboration to tackle trending vulnerabilities on the internet. It helps you find vulnerabilities in your applications, APIs, networks, DNS, and cloud configurations.

Agent-less vulnerability scanner for Linux, FreeBSD, Container, WordPress, Programming language libraries, Network devices

Application Layer DoS attack simulator

ZAP Add-ons

🐛 Advanced web vulnerability scanner with 5-rule false-positive reduction, WAF evasion, and modern HTML reports