Platform for external attack surface management and application security testing

Monitors internet-facing subdomains for vulnerabilities and misconfigurations

Amass is an open-source OWASP tool for comprehensive attack surface mapping and asset discovery through domain reconnaissance and subdomain enumeration.

Python utility for testing the existence of domain names under different TLDs to find malicious subdomains.

A multi-cloud DNS security tool that detects dangling DNS records and potential subdomain takeover vulnerabilities by scanning cloud infrastructure and DNS zones.