Top Alternatives to Zenmap

SoftPerfect Network Scanner is a fast, universal IPv4/IPv6 scanner with a wide array of options and advanced features. It's designed for both system administrators and general users seeking comprehensive network information and management capabilities.

Wireless Network Watcher is a small utility that scans your wireless network and displays a list of all devices currently connected, providing network visibility.

Skipfish is a discontinued command-line web application security scanner known for its recursive crawling and heuristic detection capabilities. It's designed to quickly assess web applications for common vulnerabilities and security flaws.

Nsauditor Network Security Auditor is a comprehensive network security auditing tool designed to help businesses assess and enhance their network infrastructure's security posture. It provides a range of scanning and monitoring capabilities.