Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · Port Scanner Software

Naabu vs RustScan

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score Naabu #2 in Port Scanner Software 9.1/10 Free plan Free plan✓ 2 of 4 features Visit Naabu
RustScan #8 in Port Scanner Software 8.4/10 Free plan Free plan✓ 2 of 4 features Visit RustScan

Naabu leads on 0 checks, RustScan on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreNaabu · 9.1/10
  • Free planboth

Naabu scores higher on our rubric for port scanner software: 9.1 against 8.4 out of 10; our editors rank them #2 and #8.

On scan scope, Naabu gives you Internet where RustScan offers Network.

Naabu is the better fit for internet-scale CLI scanning with integrations. RustScan is the better fit for fast Nmap-assisted network reconnaissance.

  • Naabu fits best

    Internet-scale CLI scanning with integrations

  • RustScan fits best

    Fast Nmap-assisted network reconnaissance

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Naabu 9.1/10 Visit ↗ RustScan 8.4/10 Visit ↗
At a glance
Editor score 9.1 8.4
Ranking #2 in Port Scanner Software #8 in Port Scanner Software
Best for Internet-scale CLI scanning with integrations Fast Nmap-assisted network reconnaissance
Pricing model Free Free
Starting price Free plan Free plan
Free plan ✓ ✓
Free trial — —
Deployment Self-hosted Self-hosted, Desktop, Mobile
Platforms Windows, macOS, Linux Windows, macOS, Linux, Android
Support Community, Docs Community, Docs
Integrations 3 integrations 1 integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market
Features Naabu 2/4 · RustScan 2/4
Service detection ✓ ✓
OS detection Not checked yet ✓ (best)
Scheduled scans Not checked yet Not checked yet
API access ✓ (best) Not checked yet
Specs
Deployment Cli Cli
Scan scope Internet Network
Export formats JSON, CSV, TXT, STDOUT greppable text
Our review
Pros
  • Supports SYN, CONNECT, UDP, IPv4, and IPv6 scanning
  • Combines Nmap and Shodan InternetDB with multiple target types
  • Exports JSON, CSV, TXT, and standard-output results
  • High-speed TCP and UDP scanning with adaptive tuning
  • Supports IPv6, CIDR ranges, files, and configurable port lists
  • Passes discovered ports to Nmap for deeper analysis
Cons
  • Local CLI use requires command-line familiarity
  • Service-version detection requires a local Nmap installation
  • Narrower CLI focus than broader port-scanning platforms
  • Command-line deployment requires terminal-based workflows
  • Windows use is documented through Docker rather than native support
  • Service and OS detection depend on Nmap passthrough
Our verdict

Naabu is an open-source command-line port scanner written in Go for security researchers, bug bounty hunters, penetration testers, and attack-surface discovery. It enumerates responsive ports across hosts, lists, CIDR ranges, ASNs, and…

Read the review →

RustScan is an open-source command-line port scanner for penetration testers, security researchers, and network administrators. It scans hosts, IP addresses, and CIDR ranges, with support for IPv6, configurable port lists and ranges,…

Read the review →
  1. NaabuPort Scanner Software 9.1Free plan
  2. RustScanPort Scanner Software 8.4Free plan

Strengths and trade-offs

  • Naabu — where it wins

    • Supports SYN, CONNECT, UDP, IPv4, and IPv6 scanning
    • Combines Nmap and Shodan InternetDB with multiple target types
    • Exports JSON, CSV, TXT, and standard-output results

    Where it doesn't

    • Local CLI use requires command-line familiarity
    • Service-version detection requires a local Nmap installation
    • Narrower CLI focus than broader port-scanning platforms

  • RustScan — where it wins

    • High-speed TCP and UDP scanning with adaptive tuning
    • Supports IPv6, CIDR ranges, files, and configurable port lists
    • Passes discovered ports to Nmap for deeper analysis

    Where it doesn't

    • Command-line deployment requires terminal-based workflows
    • Windows use is documented through Docker rather than native support
    • Service and OS detection depend on Nmap passthrough

More comparisons

All port scanner software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update