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Topophany
A terminal network topology & path observability tool
Self-hosted network monitoring in the terminal: a live map of your machines, paths and services, checked from the places you connect from, with the evidence behind every state. One Go binary. Try the live web demo (https://topophany.com/demo), powered by Go WebAssembly, which provides the exact same experience as running `topo preview` in your terminal.
I’m the maker of Topophany, and I’m super excited to share it with you all today.
💡 Why I built Topophany
If you manage multi-region VPSs, proxy chains, home labs, or distributed microservices, you’ve probably experienced this frustration: a monitoring dashboard turns red and says "Server X is unreachable."
But is the server actually down? Or is it just the routing path from your home connection that failed while the rest of the world sees it fine? What was the actual evidence?
Most existing observability stacks (Prometheus + Grafana, commercial APMs) are heavy, require Docker, databases, or Node.js frontends, and often boil down to simple "green vs. red" dials without route context.
I wanted something fundamentally different: a lightweight, terminal-native tool that answers: From where, via which path, reaching what — and on what evidence.
✨ What makes Topophany unique:
• Pure Go, Zero Dependencies: Built entirely with Go’s standard library. Zero external modules, no CGO, no background database daemons, and no web frontend. Just a single static binary: topo. • Evidence-Based Health: Health status, evidence origin, and freshness are distinct fields. A failure seen from Seattle while Tokyo is healthy is reported as a path anomaly from Seattle, not a server crash. • Geeky Terminal Visuals: Features interactive Braille dot-matrix world maps, topological schematic routes, and mouse/keyboard navigation directly in your terminal. • Instant Hands-on Preview: No configuration needed to try it. Just run topo preview, press x to simulate network outage scenarios, and inspect the lit-up failure paths.
🚀 100% Free & Open Source
Topophany is completely open source under the MIT license on GitHub https://github.com/WhitenWhiten/.... ────── I’d love to hear your feedback!
• How do you currently monitor your network paths and homelabs? • What terminal features, protocols, or export formats would you like to see next?
I'll be hanging around the comments all day to chat, answer questions, and listen to your ideas. Thank you so much for your support! 🙌
Topophany was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #265 on the daily leaderboard. Self-hosted network monitoring in the terminal: a live map of your machines, paths and services, checked from the places you connect from, with the evidence behind every state. One Go binary. Try the live web demo (https://topophany.com/demo), powered by Go WebAssembly, which provides the exact same experience as running `topo preview` in your terminal.
On the analytics side, Topophany competes within Productivity, Open Source and GitHub — topics that collectively have 774k followers on Product Hunt. The dashboard above tracks how Topophany performed against the three products that launched closest to it on the same day.
Who hunted Topophany?
Topophany was hunted by Ye Bai. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Topophany including community comment highlights and product details, visit the product overview.
Ye Bai
Hey Product Hunt community! 👋
I’m the maker of Topophany, and I’m super excited to share it with you all today.
💡 Why I built Topophany
If you manage multi-region VPSs, proxy chains, home labs, or distributed microservices, you’ve probably experienced this frustration: a monitoring dashboard turns red and says "Server X is unreachable."
But is the server actually down? Or is it just the routing path from your home connection that failed while the rest of the world sees it fine? What was the actual evidence?
Most existing observability stacks (Prometheus + Grafana, commercial APMs) are heavy, require Docker, databases, or Node.js frontends, and often boil down to simple "green vs. red" dials without route context.
I wanted something fundamentally different: a lightweight, terminal-native tool that answers: From where, via which path, reaching what — and on what evidence.
✨ What makes Topophany unique:
• Pure Go, Zero Dependencies: Built entirely with Go’s standard library. Zero external modules, no CGO, no background database daemons, and no web frontend. Just a single static binary: topo.
• Evidence-Based Health: Health status, evidence origin, and freshness are distinct fields. A failure seen from Seattle while Tokyo is healthy is reported as a path anomaly from Seattle, not a server crash.
• Geeky Terminal Visuals: Features interactive Braille dot-matrix world maps, topological schematic routes, and mouse/keyboard navigation directly in your terminal.
• Instant Hands-on Preview: No configuration needed to try it. Just run topo preview, press x to simulate network outage scenarios, and inspect the lit-up failure paths.
🚀 100% Free & Open Source
Topophany is completely open source under the MIT license on GitHub https://github.com/WhitenWhiten/....
──────
I’d love to hear your feedback!
• How do you currently monitor your network paths and homelabs?
• What terminal features, protocols, or export formats would you like to see next?
I'll be hanging around the comments all day to chat, answer questions, and listen to your ideas. Thank you so much for your support! 🙌