Hacker ApprovedDepartments

Nmap

Ranked 5 of 8 network diagnostic tools by recommenders

Free network scanner people use to quickly map machines on a network and see what they run.

Free network scanner people use to quickly map machines on a network and see what they run.

10 people gave an opinion

recommend it
8
criticize it
2
approval share
80%
Each figure is one person. RecommendsCriticizes

Recommended in 5 of 13 months

  1. November 2025: recommended
  2. December 2025: recommended
  3. January 2026: recommended
  4. February 2026: not recommended
  5. March 2026: recommended
  6. April 2026: not recommended
  7. May 2026: not recommended
  8. June 2026: not recommended
  9. July 2026: not recommended
  10. August 2026: not recommended
  11. September 2026: not recommended
  12. October 2026: recommended
  13. November 2026: not recommended (month in progress)

Why it doesn’t carry the badge

  • 8 people recommend itNeeds 10 or more, not met.
  • 4 recommenders for every criticNeeds 2 to 1 or better, met.
  • Recommended in 5 of 13 monthsNeeds 4 or more, met.

The same three rules apply to every product, and the badge can’t be bought. How the badge works

What people say about it

The reasons people give, with the number of comments that give each one. Open a reason to read what they said.

Why people recommend it

Each mark is one comment

  • Quick network scanning and mapping

    “a simple script to basically nmap your network provides the same functionality”

    Comment from 28 Dec 2025 in “The Dangers of SSL Certificates”

    “Rootless nmap scan of a /24 in under 10 seconds”

    Comment from 23 Jan 2026 in “Show HN: Whosthere: A LAN discovery tool with a modern TUI, written in Go”

Other network diagnostic tools people recommend

The four most recommended other network diagnostic tools, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.

Nmap compared with 4 alternatives
ProductRecommendCriticizeApprovalMonthsOwnedBadge
netcat19290%6—Approved
NetViews17289%1——
Whosthere16964%1——
Snitch10191%2——
NmapThis page8280%5——
See all 8 network diagnostic tools, ranked

What people said

7 of the 10 comments that mention it, newest first. Each links to the original comment.

“nmap does (or certainly used to) have options to report the OS of a given machine”

RecommendsComment from 8 Oct 2026 in “Man discovers his parents' coffee machine used 1TB of data in 10 days”

“Throws ssl certificate error”

CriticizesComment from 15 Jun 2026 in “The Joys of NMAP (2011)”

“They're all great on their own”

RecommendsComment from 18 Mar 2026 in “XPFarm; Open-source vulnerability scanner wrapping community tools and Multi-LLM”

“Better than MGM's lineup nowadays.”

RecommendsComment from 14 Mar 2026 in “NMAP in the Movies”

“I like nmap and use it often.”

RecommendsComment from 23 Jan 2026 in “Show HN: Whosthere: A LAN discovery tool with a modern TUI, written in Go”

“Rootless nmap scan of a /24 in under 10 seconds”

RecommendsComment from 23 Jan 2026 in “Show HN: Whosthere: A LAN discovery tool with a modern TUI, written in Go”

“a simple script to basically nmap your network provides the same functionality”

RecommendsComment from 28 Dec 2025 in “The Dangers of SSL Certificates”

Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.