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Best Port Authority Alternatives in 2026

Updated

20 tools from port scanner software ranked against Port Authority on the same published basis.

  1. 1
    Nmap Free plan LinuxMacself-hostedWin $9,980/mo7.6
    Port Authority vs Nmap
  2. 2
    ScanSearch Free plan apiLinuxWeb $0.30/mo7.6
    Port Authority vs ScanSearch
  3. 3
    Naabu Free plan apiLinuxMacself-hostedWin Free7.4
    Port Authority vs Naabu
  4. 4
    Pentest-Tools Port Scanner Free plan apiWeb $95/mo7.3
    Port Authority vs Pentest-Tools Port Scanner
  5. 5
    RustScan Free plan AndroidLinuxMacself-hostedWin Free7.3
    Port Authority vs RustScan
  6. 6
    NetsCLI Free plan LinuxMacWin Free7.2
    Port Authority vs NetsCLI
  7. 7
    Masscan Free plan LinuxMacself-hostedWin Free7.0
    Port Authority vs Masscan
  8. 8
    Unicornscan Free plan apiLinuxMacself-hostedWeb Free7.0
    Port Authority vs Unicornscan
  9. 9
    Angry IP Scanner Free plan LinuxMacWin Free6.9
    Port Authority vs Angry IP Scanner
  10. 10
    HostedScan Security Free trial apiWeb $39/mo6.7
    Port Authority vs HostedScan Security
  11. 11
    Nmap Online Scan Free trial Web 6.7
    Port Authority vs Nmap Online Scan
  12. 12
    PortScan.com Free plan apiWeb Free6.6
    Port Authority vs PortScan.com
  13. 13
    Port Scanner Software Win 6.2
    Port Authority vs Port Scanner Software
  14. 14
    portwave WinMacLinux 6.1
    Port Authority vs portwave
  15. 15
    Sherlock Forensics Port Scanner Free plan LinuxWin Free6.1
    Port Authority vs Sherlock Forensics Port Scanner
  16. 16
    HackerTarget TCP Port Scan apiextensionWeb $0.83/mo6.0
    Port Authority vs HackerTarget TCP Port Scan
  17. 17
    ZMap LinuxMac 5.9
    Port Authority vs ZMap
  18. 18
    SolarWinds Port Scanner Win 5.8
    Port Authority vs SolarWinds Port Scanner
  19. 19
    eslint-plugin-jsx-a11y 5.7
    Port Authority vs eslint-plugin-jsx-a11y
  20. 20
    Farsight Linux 5.7
    Port Authority vs Farsight

Port Authority alternatives compared

#ToolScoreFree planFromRuns on
1Nmap7.6Free plan$9,980/moLinux, Mac, self-hosted, Windows
2ScanSearch7.6Free plan$0.30/moAPI, Linux, Web
3Naabu7.4Free planFreeAPI, Linux, Mac, self-hosted, Windows
4Pentest-Tools Port Scanner7.3Free plan$95/moAPI, Web
5RustScan7.3Free planFreeAndroid, Linux, Mac, self-hosted, Windows
6NetsCLI7.2Free planFreeLinux, Mac, Windows
7Masscan7.0Free planFreeLinux, Mac, self-hosted, Windows
8Unicornscan7.0Free planFreeAPI, Linux, Mac, self-hosted, Web
9Angry IP Scanner6.9Free planFreeLinux, Mac, Windows
10HostedScan Security6.7No$39/moAPI, Web
11Nmap Online Scan6.7No—Web
12PortScan.com6.6Free planFreeAPI, Web
13Port Scanner Software6.2No—Windows
14portwave6.1No—Windows, Mac, Linux
15Sherlock Forensics Port Scanner6.1Free planFreeLinux, Windows
16HackerTarget TCP Port Scan6.0No$0.83/moAPI, Browser, Web
17ZMap5.9No—Linux, Mac
18SolarWinds Port Scanner5.8No—Windows
19eslint-plugin-jsx-a11y5.7No——
20Farsight5.7No—Linux
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Questions about Port Authority alternatives

What is the best alternative to Port Authority?

Nmap, number 1 in port scanner software with a score of 7.6 out of 10. The others here: ScanSearch, Naabu, Pentest-Tools Port Scanner and 16 more.

What is the best free alternative to Port Authority?

Nmap is the best-ranked alternative with a free plan. 11 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.