IVRE (Instrument de veille sur les réseaux extérieurs) or DRUNK (Dynamic Recon of UNKnown networks) vs ScanCannon: Side-by-Side Comparison (2026)

IVRE (Instrument de veille sur les réseaux extérieurs) or DRUNK (Dynamic Recon of UNKnown networks)

Threat hunters and red teamers with in-house infrastructure will extract real value from IVRE because it bundles passive DNS, active scanning, and data aggregation into a single framework you control entirely, eliminating vendor lock-in on recon workflows. The 3,964 GitHub stars reflect active use in offensive security circles, and the free pricing means you pay only for the infrastructure you run it on. This is not for teams expecting a managed SaaS experience or those who need hunting automation built in; IVRE requires familiarity with command-line tools and willingness to integrate data sources yourself.

ScanCannon

Security teams tasked with mapping external IP ranges and subdomain inventory across sprawling networks will find ScanCannon's Python-based enumeration approach faster and more flexible than commercial EASM tools for reconnaissance-heavy phases. The free pricing and 460 GitHub stars signal active maintenance and community trust, which matters when you're running large-scale discovery jobs against your own infrastructure. Skip this if you need continuous monitoring or alert-driven workflows; ScanCannon is a point-in-time reconnaissance tool, not a persistent surface management platform.