assetfinder vs ctlogs.dev: Side-by-Side Comparison (2026)

assetfinder: A command-line tool for discovering domains and subdomains related to a target domain during reconnaissance activities..

ctlogs.dev: Fast Certificate Transparency search and JSON API for subdomain reconnaissance. built by Apps34. Core capabilities include Real-time Certificate Transparency Search, Automated Subdomain Enumeration, High-Performance REST JSON API..

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

assetfinder is open-source with 3,393 GitHub stars. ctlogs.dev is developed by Apps34. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

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