ZMap Alternatives

Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.

This is the fastest Internet port scanner.

Ensure healthy website performance, uptime, and free from vulnerabilities. Automatic checks for SSL Certificates, domains and monitor issues with your websites all from one console and get instant notifications on any issues.

Try for free freemium $9.0 / Monthly (Lite plan)

Open-source and cross-platform network scanner designed to be fast and simple to use

Open Source

Advanced IP Scanner shows all network devices, gives you access to shared folders, and can even remotely switch computers off. Download it Free.

Zenmap is the official cross-platform GUI for the Nmap Security Scanner.

Free IP Scanner: a very fast IP scanner and port scanner.

A free multi-threaded ICMP, Port, IP, NetBIOS, ActiveDirectory and SNMP scanner with many advanced features.

Avira Home Guard is a free home network scanner app that helps secure the smart home, detects all devices connected to your Wi-Fi and tests your internet speed.

Unicornscan is a new information gathering and correlation engine built for and by members of the security research and testing communities.

Discover which devices are connected to any Wi-Fi network, map devices, detect intruders, assess...

Over 60 great tools to help network engineers troubleshoot issues before users are affected. Download a 14-day trial and explore all the tools for free!

Fingbox home network security device helps you keep your internet safe and secure, allows you to monitor your household digitally and improve your home Wi-Fi experience.

A handy systems and security-focused tool, Port Authority is a very fast Android port scanner.