Best Port Scanner Software in 2026
Updated
In short: Naabu is ranked #1 of 25 as of 5 October 2026, ahead of NetsCLI and RustScan. The best-ranked option with a free plan is NetsCLI. The lowest first paid tier on this page is ScanSearch at $0.30/mo.
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.
25 port scanner software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
10 of the 25 here have a free tier you can use, 0 have open-source code on record, and 0 have full bars: free, open, on most of your devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 1 | NaabuWindows · Mac · Linux · Self-hosted · API | Three bars | — | 3 of 6 | Free | 6.6 | |
| 2 | NetsCLIWindows · Mac · Linux | Three bars | — | 3 of 6 | Free | 6.6 | |
| 3 | RustScanWindows · Mac · Linux · Android · Self-hosted | Three bars | — | 4 of 6 | Free | 6.6 | |
| 4 | Angry IP ScannerWindows · Mac · Linux | Three bars | — | 3 of 6 | Free | 6.5 | |
| 5 | MasscanWindows · Mac · Linux · Self-hosted | Three bars | — | 3 of 6 | Free | 6.5 | |
| 6 | NmapWindows · Mac · Linux · Self-hosted | Three bars | — | 3 of 6 | $9,980/mo | 6.5 | |
| 7 | ScanSearchWeb · Linux · API | Two bars | — | 2 of 6 | $0.30/mo | 6.5 | |
| 8 | UnicornscanWeb · Mac · Linux · Self-hosted · API | Three bars | — | 3 of 6 | Free | 6.5 | |
| 9 | Pentest-Tools Port ScannerWeb · API | Two bars | — | 1 of 6 | $95/mo | 6.4 | |
| 10 | Nmap Online ScanWeb | One bar | — | — | 1 of 6 | — | 5.4 |
| 11 | Port Scanner SoftwareWindows | One bar | — | — | 1 of 6 | — | 5.3 |
| 12 | portwaveWindows · Mac · Linux | One bar | — | — | 3 of 6 | — | 5.3 |
| 13 | Sherlock Forensics Port ScannerWindows · Linux | No signal | — | — | 2 of 6 | — | 5.3 |
| 14 | FarsightLinux | No signal | — | — | 1 of 6 | — | 5.2 |
| 15 | HackerTarget TCP Port ScanWeb | One bar | — | — | 1 of 6 | — | 5.2 |
| 16 | PortScan.comWeb · API | One bar | — | 1 of 6 | Free | 5.2 | |
| 17 | ZMapMac · Linux | No signal | — | — | 2 of 6 | — | 5.2 |
| 18 | Advanced Port ScannerWindows | No signal | — | — | 1 of 6 | — | 5.1 |
| 19 | eslint-plugin-jsx-a11yNo platforms listed | No signal | — | — | 0 of 6 | — | 5.1 |
| 20 | Port AuthorityAndroid | No signal | — | — | 1 of 6 | — | 5.1 |
| 21 | PortScannerLabsWeb | No signal | — | — | 1 of 6 | — | 5.1 |
| 22 | Windows Malicious Software Removal ToolNo platforms listed | No signal | — | — | 0 of 6 | — | 5.1 |
| 23 | HostedScan SecurityWeb · API | One bar | — | — | 1 of 6 | $39/mo | 5.0 |
| 24 | Port Scanner ActiveX ControlWindows | No signal | — | — | 1 of 6 | — | 4.8 |
| 25 | SolarWinds Port ScannerWindows | No signal | — | — | 1 of 6 | — | 4.8 |
Compare all 25 in a table
| # | App | Score | Free plan | From | Free plan | Paid from | Deployment | Scan scope |
|---|---|---|---|---|---|---|---|---|
| 1 | Naabu | 6.6 | Free plan | Free | Yes | — | cli | internet |
| 2 | NetsCLI | 6.6 | Free plan | Free | Yes | — | cli | network |
| 3 | RustScan | 6.6 | Free plan | Free | Yes | — | cli | network |
| 4 | Angry IP Scanner | 6.5 | Free plan | Free | Yes | — | desktop | — |
| 5 | Masscan | 6.5 | Free plan | Free | Yes | — | cli | internet |
| 6 | Nmap | 6.5 | Free plan | $9,980/mo | Yes | — | desktop | — |
| 7 | ScanSearch | 6.5 | Free plan | $0.30/mo | Yes | 30 /mo | cloud | internet |
| 8 | Unicornscan | 6.5 | Free plan | Free | Yes | — | cli | network |
| 9 | Pentest-Tools Port Scanner | 6.4 | Free plan | $95/mo | Yes | 95 /mo | cloud | internet |
| 10 | Nmap Online Scan | 5.4 | No | — | Yes | — | cloud | internet |
| 11 | Port Scanner Software | 5.3 | No | — | — | — | desktop | host |
| 12 | portwave | 5.3 | No | — | Yes | — | cli | internet |
| 13 | Sherlock Forensics Port Scanner | 5.3 | No | — | Yes | — | desktop | network |
| 14 | Farsight | 5.2 | No | — | Yes | — | self-hosted | internet |
| 15 | HackerTarget TCP Port Scan | 5.2 | No | — | Yes | 10 /mo | cloud | internet |
| 16 | PortScan.com | 5.2 | Free plan | Free | Yes | — | cloud | host |
| 17 | ZMap | 5.2 | No | — | Yes | — | cli | internet |
| 18 | Advanced Port Scanner | 5.1 | No | — | Yes | — | desktop | — |
| 19 | eslint-plugin-jsx-a11y | 5.1 | No | — | Yes | — | — | — |
| 20 | Port Authority | 5.1 | No | — | Yes | — | — | internet |
| 21 | PortScannerLabs | 5.1 | No | — | Yes | — | cloud | internet |
| 22 | Windows Malicious Software Removal Tool | 5.1 | No | — | Yes | — | — | — |
| 23 | HostedScan Security | 5.0 | No | $39/mo | No | 39 /mo | cloud | internet |
| 24 | Port Scanner ActiveX Control | 4.8 | No | — | No | — | desktop | network |
| 25 | SolarWinds Port Scanner | 4.8 | No | — | No | — | desktop | network |
Is your app on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which port scanner software is ranked first on Freedom251?
Naabu is ranked #1 of 25 with a score of 6.6. NetsCLI is second and RustScan third.
How many of these have a free plan?
10 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, ScanSearch has the lowest first paid tier we found: $0.30/mo.
How is this list ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.