01 Nearby devices
Discovery on your Wi‑Fi finds peers on the private network — no accounts in the middle.
Chat local. Private. Nothing in the middle.
Lan Runner finds nearby devices on the same LAN and opens encrypted peer-to-peer chat sessions. No account, no central server, no internet required.
02 Encrypted chat
AES-256-GCM sessions over direct LAN links. Messages stay on the network you control.
03 Guest kits
One self-contained HTML file for someone who has not installed Lan Runner yet.
04 Diagnostics
Live counters for discovery, inbound TCP, and session state when a peer times out.
Open
Same Wi‑Fi · Encrypted · No account · No cloud · Public beta
Download Lan Runner
Install or extract the build for each device. The interface opens locally in your browser on the private network.
Get Windows →Ports & guest kits
- UDP 47100 discovery · TCP 47101 messaging
- Guest kit HTML · QR for phones over HTTPS
- No telemetry · No cloud dependency
Allow inbound ports on devices you control. Guest kits are bearer tokens — send them like a password.
Release notes →Nothing in the middle. Nothing in the cloud.
Lan Runner has no account system, no central relay, and no internet requirement. Peers connect on your LAN. Guest kits open exactly one conversation — never your peer list, console, or another guest.
