Subra vs Detectify Surface Monitoring: 2026 Comparison
Subra is a free external attack surface management tool. Detectify Surface Monitoring is a commercial external attack surface management tool by Detectify. Compare features, ratings, integrations, and community reviews side by side to find the best external attack surface management fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
Security teams running manual subdomain discovery workflows or evaluating attack surface management on a budget should start with Subra; it wraps the open-source subfinder tool in a web interface that cuts the friction of command-line enumeration without requiring infrastructure spend. The 54 GitHub stars and free pricing model mean you can validate subdomain coverage gaps in minutes, not weeks of vendor evaluation. Skip this if you need continuous monitoring, prioritization scoring, or integration with your existing vulnerability management stack; Subra is a one-time discovery tool, not a platform.
Mid-market and enterprise security teams that struggle to track internet-facing assets across multiple cloud providers will get the most from Detectify Surface Monitoring. Its automatic subdomain discovery and payload-based testing catch misconfigurations that passive scanning misses, and it maps directly to NIST ID.AM and DE.CM, the two functions most security teams underinvest in. Skip this if your org needs deep application scanning or prioritizes known-vulnerability remediation over asset visibility; Detectify assumes you've already cataloged what's out there and want continuous monitoring of what's exposed.
