> cat /dev/github | grep security-tools
discovered 03 Aug 2026

columbus-server

via awesome-list
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Columbus Server is a deprecated API-first subdomain discovery service that provides fast subdomain enumeration capabilities. It offers features such as customizable output formats and integration with Certificate Transparency for fetching entries, facilitating efficient subdomain lookup operations for cybersecurity assessments. Users can utilize command-line options to check for updates, configure settings, and manage the service easily.