Assetnote Exposure Engine vs tko-subs: side-by-side comparison (2026)

Assetnote Exposure Engine: Continuous exposure detection & verification engine for attack surface mgmt. Built by Assetnote.

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

The table above shows where their features, integrations, deployment and company size fit differ.

Assetnote Exposure Engine is made by Assetnote founded in 2018-01-01T00:00:00.000Z. tko-subs is open-source with 766 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Often, yes. Assetnote Exposure Engine and tko-subs are both External Attack Surface Management products, and both cover Security Research. Key differences: Assetnote Exposure Engine is Commercial while tko-subs is Free, tko-subs is open-source. Use the table above to see where features, deployment and company size fit differ.