XMap is a fast network scanner designed for performing Internet-wide IPv6 & IPv4 network research scanning.
LZR quickly detects and fingerprints unexpected services running on unexpected ports.
GPS is a scanning platform that learns and predicts the location of IPv4 services across all 65K ports.
Scout - a Contactless Active Reconnaissance Tool
A modular all-stack network scanner for next-generation internet surveys!
An open source passive reconnaissance and vulnerability assessment platform.
Internet-wide IPv4 TCP scanner for linux that doesn't require root privileges/capabilities, but is much slower than scanners that do require them.