The best Port Authority alternatives

Nmap suits network administrators who need host, service, and port discovery, inventory, or uptime monitoring.

ScanSearch identifies security researchers, penetration testers, red teams, bug bounty hunters, blue teams and defenders as intended users.

It suits security consultants, internal security teams, and managed security providers looking to scan network targets.

Masscan suits users who need to scan many machines across broad IP ranges.

RustScan may suit command-line users who need to discover open network ports and pass results to Nmap.

Naabu suits security practitioners doing attack-surface discovery in bug-bounty work or penetration tests.

NetsCLI suits people who need local network diagnostics through a desktop app or command line, including repeatable diagnostic and automation…

It is mainly suited to network administrators monitoring and managing networks.

It suits penetration testers, compliance auditors, and system administrators who need a desktop TCP port scanner.

Unicornscan suits users who need network reconnaissance through a command-line tool, with Alicorn available for web-based review of results.

MSRT may suit Windows users seeking a tool for prevalent malware cleanup, either through Windows Update or an on-demand standalone scan.

Advanced Port Scanner may suit people managing LANs or handling networking tasks on Windows.

This plugin suits React developers who use ESLint and want static accessibility checks in JSX.

It suits people checking the publicly reachable ports of their current connection, as well as servers, CI/CD pipelines, and monitoring scripts using…

It suits home users, small businesses, administrators, developers, gamers, and self-hosters checking internet-facing ports.