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Crossroad-A2A

Crossroad A2A: agent-to-agent mail so ChatGPT, Claude, Gemini, Codex and Grok agents work as one team across machines and SaaS apps. Open source, v0.1 beta.

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GITHUB · launched Oct 18, 2026 · 16 upvotes (top 71%) · 0 views

Niche: multi-agent frameworks and protocols · 298 launches, 14 in the last 7 days ▼ -18% · Explore this niche →

Category and tags
  • Horizontal
  • Agent / copilot
  • Developer
  • AI-native
  • Hobby / open-source project
  • a2a
  • agent-communication
  • agent-orchestration
  • agent-to-agent
  • ai-agents
  • ai-collaboration
  • +13 more

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More like this: all 298 launches in multi-agent frameworks and protocols →

Could you build this?

Yes Agent-to-agent messaging across hosted LLM APIs and SaaS apps is an integration and message-routing layer over existing APIs. It is open source and at v0.1 beta, which indicates a small codebase.

Competitors

Other products that read as similar to this one : 331 launches clear the similarity bar, closest 8 shown.

Attention rank: #305 of 332 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 330 days after the earliest competitor.

  • agentes-chat · github · 2026-11-09 · 1316 upvotes · similarity 0.56
  • AgentDM · hn · 2026-04-09 · 6 upvotes · similarity 0.55
  • 4 in 1 ai · ph · 2026-10-07 · 1 upvotes · similarity 0.50
  • Crossagent.si · ph · 2026-10-06 · 2 upvotes · similarity 0.49
  • Outlira · ph · 2026-11-09 · 2 upvotes · similarity 0.48
  • graiboard · ph · 2026-10-10 · 1 upvotes · similarity 0.48
  • Multi-Ai-Chat-Desktop · ph · 2026-09-14 · 2 upvotes · similarity 0.46
  • Lexaside · ph · 2026-10-14 · 1 upvotes · similarity 0.46

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.