ctlogs.dev vs python-builtwith: side-by-side comparison (2026)

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.

python-builtwith: A Python API client for BuiltWith that enables programmatic access to website technology profiling and reconnaissance data.

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

ctlogs.dev is made by Apps34. python-builtwith is open-source with 35 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Often, yes. ctlogs.dev and python-builtwith are both External Attack Surface Management products, and both cover OSINT, Reconnaissance. Key differences: ctlogs.dev is Commercial while python-builtwith is Free, python-builtwith is open-source. Use the table above to see where features, deployment and company size fit differ.