IP addresses break, dial keys instead

Add peer-to-peer connectivity to your app, agent, or workflow.

Low-latency between any platform, cloud, or device.

No VPNs, user accounts, or proprietary networks.

Read the Docs

Swift

Rust

JavaScript

Kotlin

Raspberry Pi

Espressif

Linux

Windows

Apple

Android

Cloudflare

AWS

Azure

“Doubling the network speed halves our compute budget.”

Ari Lotter

Principal Engineer at Nous

Read the Case Study

Low-latency everywhere

Write your app once and connect it everywhere, with one API.

Use all the radios: Wi-Fi, cellular, ethernet, LAN, or Bluetooth, or bring your own transport.
Lean on the cloud less with direct links that bypass NATs and firewalls, with stateless relays as fallback.
Built-in end-to-end encryption, with opt-in observability.

How are people using iroh?

Distributed AI Training

Train foundation LLMs with compute distributed around the world, across AWS, GCP, Azure, and self-hosted infrastructure.

Video Streaming

Stream video between devices, using peer to peer technology. Create encrypted connections built on open standards, across the globe or across the room.

Real-time Sync for Mobile Applications

Powers apps for hundreds of thousands of devices around the world, even when internet access is precarious.

Point of Sale Payments

Connect payment terminals directly to point of sale systems over Bluetooth, LAN, or Wi-Fi with full PCI compliance and no additional servers.

IoT & Embedded Devices

Run iroh on ESP32, Raspberry Pi, and Linux with the same API. Devices discover each other automatically. No brokers, no gateways.

File Transfer & Sync

Move files and large blobs directly between devices with content-addressed, resumable transfers that verify every byte.

Ready for production

Performant. Every commit to iroh's main branch runs through a growing set of simulations & tests.
Monitored. Observability and network diagnostics track connection health and throughput across all your devices and services.
Supported. Every major release is supported for multiple years with extended support contracts available. Get help from the pros.

Monitor your App

Fast connections.
Anywhere.
Forever.

The core peer-to-peer technology is open source and built on open standards, so you're never locked in: connect over our free community relays, self-host your own, let us run them for you, and switch between them whenever you want.

Start building.

Read the Docs

App.swift

import IrohLib

@main
struct App {
    static func main() async throws {
        // Dial a peer and echo a message over a bidirectional stream.
        let endpoint = try await Endpoint.bind(
            options: EndpointOptions(preset: presetN0())
        )

        let conn = try await endpoint.connect(addr: serverAddr, alpn: ALPN)
        let bi = try await conn.openBi()

        try await bi.send().writeAll(buf: Data("hello iroh".utf8))
        try await bi.send().finish()

        let echoed = try await bi.recv().readToEnd(sizeLimit: 64)
        print(String(decoding: echoed, as: UTF8.self))
    }
}