censys-subdomain-finder vs ctlogs.dev: Side-by-Side Comparison (2026)

censys-subdomain-finder: A tool for performing subdomain enumeration using Censys API..

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.

censys-subdomain-finder is open-source with 818 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.

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