SpiderFoot

SpiderFoot is a free, open-source OSINT automation and reconnaissance framework written in Python. It helps cybersecurity professionals, penetration testers, investigators, and analysts discover and organize publicly available information about digital assets and other identifiers. Users can investigate domains, IP addresses, hostnames, network ranges, email addresses, ASNs, and people’s names.

The software automates searches across more than 200 sources through a modular system, with options for passive information gathering and active probing. Its modules can support tasks such as WHOIS and DNS discovery, checks against breach databases, social media research, geolocation, and IP reputation lookups. SpiderFoot offers both a browser-based interface and a command-line interface, allowing users to configure scans, review findings, map relationships, and export reports.

The framework is designed for uses including penetration testing, red-team reconnaissance, defensive exposure reviews, breach monitoring, and incident response. It runs on Windows, macOS, and Linux, and can be customized or extended with additional modules. SpiderFoot is available as a free download, with setup guidance for users getting started.