crt.sh is a free external attack surface management solution. DDactic Attack Surface Discovery is a commercial external attack surface management solution by DDactic. Features, integrations, deployment and the company behind each one, side by side.
Bash script for subdomain enumeration via crt.sh certificate transparency logs.
Scans domains to discover attack surface, vulnerabilities, and generate hardening
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Based on what each listing shows: deployment, company size, price and open source.
crt.sh fits if you need to run it on your own servers, you need a free product and you want an open-source product.
DDactic Attack Surface Discovery fits if you want a cloud product.
Common questions when comparing crt.sh vs DDactic Attack Surface Discovery for external attack surface management.
crt.sh: Bash script for subdomain enumeration via crt.sh certificate transparency logs.
DDactic Attack Surface Discovery: Scans domains to discover attack surface, vulnerabilities, and generate hardening. Built by DDactic.
The table above shows where their features, integrations, deployment and company size fit differ.
crt.sh is open-source. DDactic Attack Surface Discovery is made by DDactic founded in 2026-01-01T00:00:00.000Z. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.
Often, yes. crt.sh and DDactic Attack Surface Discovery are both External Attack Surface Management products, and both cover Subdomain Enumeration, DNS Security, Security Scanning. Key differences: crt.sh is Free while DDactic Attack Surface Discovery is Commercial. Use the table above to see where features, deployment and company size fit differ.
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