Detectify Surface Monitoring vs tko-subs: Side-by-Side Comparison (2026)

Detectify Surface Monitoring: Monitors internet-facing subdomains for vulnerabilities and misconfigurations. built by Detectify. Core capabilities include Automatic subdomain discovery and monitoring, Continuous vulnerability scanning, Payload-based security testing..

tko-subs: A tool for detecting and taking over subdomains with dead DNS records..

Both serve the External Attack Surface Management market but differ in approach, feature depth, and target audience.

Detectify Surface Monitoring is developed by Detectify. tko-subs is open-source with 766 GitHub stars. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Detectify Surface Monitoring and tko-subs serve similar External Attack Surface Management use cases: both are External Attack Surface Management tools, both cover Subdomain Enumeration. Key differences: Detectify Surface Monitoring is Commercial while tko-subs is Free, tko-subs is open-source. Review the feature comparison above to determine which fits your requirements.