DDactic Attack Surface Discovery is a commercial external attack surface management solution by DDactic. massdns is a free external attack surface management solution. Features, integrations, deployment and the company behind each one, side by side.
Scans domains to discover attack surface, vulnerabilities, and generate hardening
A high-performance DNS stub resolver for bulk lookups and reconnaissance (subdomain enumeration)
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Based on what each listing shows: deployment, company size, price and open source.
DDactic Attack Surface Discovery fits if you want a cloud product.
massdns fits if you need to run it on your own servers, you need a free product and you want an open-source product.
Common questions when comparing DDactic Attack Surface Discovery vs massdns for external attack surface management.
DDactic Attack Surface Discovery: Scans domains to discover attack surface, vulnerabilities, and generate hardening, built by DDactic.
massdns: A high-performance DNS stub resolver for bulk lookups and reconnaissance (subdomain enumeration).
The table above shows where their features, integrations, deployment and company size fit differ.
DDactic Attack Surface Discovery is made by DDactic founded in 2026-01-01T00:00:00.000Z. massdns is open-source with 3,417 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.
Often, yes. DDactic Attack Surface Discovery and massdns are both External Attack Surface Management products, and both cover Reconnaissance, Subdomain Enumeration. Key differences: DDactic Attack Surface Discovery is Commercial while massdns is Free, massdns is open-source. Use the table above to see where features, deployment and company size fit differ.
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