Free Port Scanner Alternatives

TCPView is a Windows program that will show you detailed listings of all TCP and UDP endpoints on...

CurrPorts displays the list of all currently opened TCP/IP and UDP ports on your local computer.

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)

Advanced Port Scanner is a fast and free software for port scanning.

SecurityXploded is an Infosec Research Organization offering 200+ FREE Security/Password Recovery Tools, latest Research Articles and FREE Training on Reversing/Malware Analysis

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

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

Open Source

Umit: The Nmap Frontend:

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

At whatever point you open a site association through your program or download documents, you are opening TCP/UDP connions.

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

Tenable.io Cyber Exposure platform helps to protect any asset on any computing platform and eliminate blind spots.

Total Network Monitor is a network monitoring software that is designed to continuously monitor your local network, individual computers, and services. Free for 60 days.

Powerful multipurpose network administration tool for Windows and macOS