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Best Port Scanner Software in 2026

Port scanners help you inspect network ports and understand what a scan reveals. Compare scan scope, service detection, and OS detection to see which findings each tool can provide. Deployment, API access, and export formats matter for fitting scans into your workflow, while scheduled scans can support recurring checks. Free-plan availability and paid-from pricing add useful cost context. Naabu, RustScan, and Angry IP Scanner are among the entries to consider alongside Nmap and ScanSearch. Use the listed criteria to weigh the information you need against how you plan to run scans and handle their results.

26 apps
Research read 23 Sept 2026
How the order is worked out

1

Avidemux

Free plan Open source LinuxMacWeb+1

9.2 Free plan Visit site
2

Masscan

Free plan Open source LinuxMacSelf-hosted+1

Masscan focuses on high-speed scanning across many machines, with multiple output formats and service banner checks.

9.1 Free plan Visit site
3

Angry IP Scanner

Free plan LinuxMacWindows

Angry IP Scanner offers network scanning across three desktop platforms without an installation requirement, according to its maker.

7.5 Free plan Visit site
4

HackerTarget TCP Port Scan

Free plan APIExtensionWeb

Choose HackerTarget TCP Port Scan for a web based check of common open ports, or use its advanced scanner when you need broader port coverage.

7.4 Free plan · paid from $10/mo (annual) Visit site
5

Naabu

Free plan APILinuxMac+2

Naabu brings several scan types, flexible inputs and output formats into a CLI workflow.

7.4 Free plan Visit site
6

Nmap

Free plan LinuxMacSelf-hosted+1

Nmap combines discovery and scanning functions with scripting and companion tools. It is free for end users, while commercial redistribution requires separate OEM licensing.

7.4 Free plan Visit site
7

Advanced Port Scanner

Free plan Windows

Choose Advanced Port Scanner if you need a free Windows tool for scanning network ports and managing discovered computers on a LAN.

7.3 Free plan Visit site
8

NetsCLI

Free plan LinuxMacWindows

NetsCLI brings desktop, terminal, CLI, and MCP access to local network scanning in a free MIT-licensed package.

7.3 Free plan Visit site
9

RustScan

Free plan AndroidLinuxMac+2

RustScan pairs port scanning with Nmap handoff and scripting options. Its installation guidance flags possible issues on macOS and Windows, and a low macOS open-file limit can affect scans.

7.1 Free plan Visit site
10

eslint-plugin-jsx-a11y

Free plan

eslint-plugin-jsx-a11y can flag a broad set of accessibility issues while developers work in JSX.

7.0 Free plan Visit site
11

Pentest-Tools Port Scanner

Free plan APIWeb

7.0 Free plan · paid from $95/mo · 7-day trial Visit site
12

PortScan.com

Free plan APIWeb

PortScan.com offers fast and deep checks of the requesting public IP, with API access and automation options. Treat its results as a basic port check rather than a security audit.

7.0 Free plan Visit site
13

Unicornscan

Free plan APILinuxMac+2

Unicornscan combines stateless probing with Alicorn’s result-viewing interface and PostgreSQL integration.

7.0 Free plan Visit site
14

Nmap Online Scan

Free plan Web

Choose Nmap Online Scan if you want web-based Nmap scans with configurable modes and export options.

6.9 Free plan · paid from $1.99 · 7-day trial Visit site
15

ScanSearch

Free plan APILinuxWeb

ScanSearch combines live exposure scans with search and monitoring tools. Use it only for targets you are authorized to scan, and note the free scanner's result and export limits.

6.9 Free plan · paid from $30/mo Visit site
16

Farsight

Free plan Linux

Farsight combines configurable SYN scanning with historical targeting and banner collection, but deployment requires several technical dependencies.

6.8 Free plan Visit site
17

Port Authority

Free plan Android

Choose Port Authority if you need a free Android tool for host discovery, TCP port scans, and network lookups. Its GPL-3.0 license and lack of ads may suit users who value open-source software.

6.8 Free plan Visit site
18

PortScannerLabs

Free plan Web

Choose PortScannerLabs for a quick, free check of common ports on an IP address or domain, with risk guidance and no account requirement.

6.7 Free plan Visit site
19

portwave

Free plan LinuxMacWindows

Choose Portwave if you want a free CLI scanner with HTTP and SSL enrichment, file exports, and support for mixed target types.

6.7 Free plan Visit site
20

Sherlock Forensics Port Scanner

Free plan LinuxWindows

This tool maps TCP ports and identifies services, with CSV exports that include a signed integrity sidecar.

6.7 Free plan Visit site
21

Windows Malicious Software Removal Tool
by Windows Malicious Software Removal Tool
Free plan Windows

Pick MSRT if you want a free Windows tool for periodic cleanup of prevalent malware, with background delivery or an on-demand standalone scan.

6.5 Free plan Visit site
22

ZMap

Free plan LinuxMacSelf-hosted

Choose ZMap for fast, broad network measurement from a command-line environment, especially when paired with the project’s related tools.

6.5 Free plan Visit site
23

HostedScan Security

Free trial APIWeb

HostedScan brings several scanning tools, vulnerability tracking, alerts, and reports into a cloud service.

6.1 From $39/mo · 14-day trial Visit site
24

SolarWinds Port Scanner

Free trial Self-hostedWindows

Port Scanner provides focused IP-range and service discovery inside a larger Windows toolset.

5.6 From $1,997 · 14-day trial Visit site
25

Port Scanner ActiveX Control

Paid Windows

Port Scanner ActiveX Control provides configurable network scanning for Windows applications, with APIs and development examples included.

5.2 Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

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