LibrePing

LibrePing is a decentralized, peer-to-peer uptime monitor. It checks whether websites and services are online from many places around the world at once and shows the results on a live geographic map. Unlike commercial monitoring services, there is no central company and no single server: anyone can run a node, and nodes share their signed measurements with each other directly over a libp2p gossip mesh.

There are two roles you can run. A Hub is a publicly reachable node that stores results, serves a dashboard, and federates with peer hubs. A Probe is a lightweight agent that runs checks from its location and submits signed results to a hub. You can also just use it with no hosting at all: open any public hub's dashboard, and a browser-held key becomes your account — no signup.

Features:

• Multi-location checks: HTTP(S), TCP, DNS, TLS certificate, ICMP ping, and traceroute, run from probes around the world.
• Truly decentralized: hubs form a peer-to-peer mesh with no central server; results, the check catalog, and the hub directory federate and converge via gossip, anti-entropy, and catch-up sync.
• No signup: the dashboard creates a key in your browser that is your account.
• Deduplicated by design: the same target added by many people is one shared check, monitored once.
• Everything is signed and verified: every result, check, subscription, and hub announcement carries a signature that every hub checks; forged or tampered data is dropped on arrival.
• Encrypted alerts: get notified via ntfy, Discord, Slack, or a raw webhook when a service is down, confirmed from multiple locations. Your destination is sealed so only the hubs that actually notify you can read it. Delivery is at-least-once with automatic hub failover.
• Live geographic dashboard: a world map, a network overview, and a per-monitor view with uptime/latency timeline and per-location breakdown.
• Scales with the network: results are sharded across hubs rather than every hub mirroring everything.