echooo

Map the hidden connections between any two people on earth

Productivity

Social Networking

Data Visualization

"The world is just 6 stations away." Have you ever wondered how closely you're connected to Shohei Ohtani, Elon Musk, or a historical figure? echooo is a visual human-network navigator that turns complex social relationships into an intuitive, beautiful transit map. Whether you're exploring connections between global icons or mapping your own professional network, echooo finds the shortest path—within 6 steps. 🚉 How it works: - Choose Your Route: Select a "Departure" and "Destination" person - Read the Tracks: The app analyzes public relationship data to generate a subway-style route - Analyze the Connections: Each line on the map represents the nature of the relationship: - Thick solid lines → Family ties, co-founders, close collaborations - Standard lines → Co-stars, shared projects, organizational affiliations - Dashed lines → Public meetings, historical influence, inferred connections 🛡️ Privacy-First Network Building Unlike traditional social networks, echooo gives you full control over your visibility. When you add your own connections: - 🌐 Public — Anyone can route through you in their search - 👥 Connections Only (Default) — You only appear as a node for people you directly know. Invisible to strangers - 🔒 Private — Your network is for your eyes only 🎯 3 Ways to Use echooo: 1. Celebrity Routes — Discover unexpected bridges between tech titans, political leaders, and pop stars 2. Find Your Distance — Add your real-world connections and see how many "stops" you are from global influencers 3. Icebreaker for Business — Find mutual connections before meeting a new client or investor to build instant trust Right now the database covers 273,000+ notable people. The more users join and add their own networks, the richer and more personal the map becomes. Explore your routes today and see how small the world really is. --- Maker's Comment Hi Product Hunt! 👋 I'm thrilled to share echooo with you today. It started with a simple question: "How small is the world, really?" We've all heard of Six Degrees of Separation, but I'd never seen it actually visualized in an intuitive way—so I built one. The metro transit map metaphor came naturally. Routes, stops, connections, line types—it maps perfectly onto how human relationships work. A direct family tie is an express line. A shared conference appearance is a local stop. I also knew that a network app is only trustworthy if privacy is built in from day one. That's why echooo defaults to "Connections Only" mode—your personal network will never be exposed to strangers unless you choose it. This is still early. The database is celebrities-only for now, but the real vision is a living network where anyone can join and watch the map grow. I'd love to hear your thoughts: - Who is the most unexpected connection you found? - How do you like the transit-map visualization? I'll be here all day. Thank you for your support! 🚀