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go-responder

Responder is a LLMNR, NBT-NS and MDNS poisoner, with built-in HTTP/SMB/MSSQL/FTP/LDAP rogue authentication server supporting NTLMv1/NTLMv2/LMv2, Extended Security NTLMSSP and Basic HTTP authentication.

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GITHUB · launched Sep 17, 2026 · 95 upvotes (top 9%) · 1 view

Niche: penetration testing tools · 138 launches, 8 in the last 7 days ▼ -43% · Explore this niche →

Category and tags
  • Security
  • Dev tools
  • Developer
  • Not AI
  • Hobby / open-source project

Visit website ↗ Source listing ↗

More like this: all 138 launches in penetration testing tools →

Could you build this?

No Re-implementing Responder in Go demands in-depth reverse engineering of proprietary Windows authentication protocols (NTLMSSP, SMB, Kerberos, LLMNR) and low-level raw network socket handling.

What it would actually take: This project requires building custom network servers in Go implementing LLMNR, NBT-NS, mDNS, SMB, MSSQL, HTTP, and LDAP protocols down to the raw binary wire format. The hard part is accurately replicating Windows challenge-response authentication handshakes, handling binary NTLMv1/v2 message signing, and raw packet crafting without dropping connections or triggering basic IDS alarms.

Competitors

Other products that read as similar to this one : 33 launches clear the similarity bar, closest 8 shown.

Attention rank: #1 of 34 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 314 days after the earliest competitor.

  • Superlog Responder · ph · 2026-08-06 · 281 upvotes · similarity 0.57
  • GoMailer · ph · 2026-10-12 · 1 upvotes · similarity 0.39
  • Web Harvester · ph · 2026-10-23 · 2 upvotes · similarity 0.38
  • ReplyGauge · ph · 2026-09-13 · 2 upvotes · similarity 0.37
  • Drainer-Panel-Tool · github · 2026-11-10 · 11 upvotes · similarity 0.36
  • httpresponder.com · github · 2026-10-15 · 21 upvotes · similarity 0.35
  • PhantomBuffer · github · 2026-10-18 · 58 upvotes · similarity 0.34
  • Sendhit · ph · 2026-09-19 · 2 upvotes · similarity 0.33

Related data

The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.