Assetnote Attack Surface Management Tool vs OWASP Amass: Side-by-Side Comparison (2026)

Assetnote Attack Surface Management Tool: ASM platform that scans external attack surfaces hourly for vulnerabilities. built by Searchlight Cyber. Core capabilities include Hourly automated scanning of external assets, Asset and subdomain discovery from seed domains, Automated asset enrichment with version verification..

OWASP Amass: Performs network mapping of attack surfaces and external asset discovery using open source information gathering and active reconnaissance techniques..

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

Assetnote Attack Surface Management Tool is developed by Searchlight Cyber. OWASP Amass is open-source with 14,260 GitHub stars. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Assetnote Attack Surface Management Tool and OWASP Amass serve similar External Attack Surface Management use cases: both are External Attack Surface Management tools. Key differences: Assetnote Attack Surface Management Tool is Commercial while OWASP Amass is Free, OWASP Amass is open-source. Review the feature comparison above to determine which fits your requirements.