🜂 Hearth

One install, any screen. Run your apps where they live. See them anywhere else.

One app from the hearth, streamed as a native window.

One command on each machine

# Desktop (the hearth):
hearth-agent serve

# Laptop, phone, Pi — anywhere:
hearth-client stream-window --agent <desktop-ip>:9430 --start --with-audio --real-audio

That's it. No accounts. No cloud. The laptop pops a native window with the app from the desktop — keyboard, mouse, audio, everything.

The pitch

You own a fast desktop, a laptop, a phone, maybe a Pi, maybe a Steam Deck. Every piece of software you actually use lives on one of them. When you sit down at another, you either re-install everything or you suffer.

Hearth installs once on your hearth — the powerful machine. Every other device becomes a native-feeling window into the apps that live there. No cloud. No sync. No re-installing. Your apps where you want them, on the screen in front of you.

How it works

Install

Three ways. Pick one.

1. One-line installer (Linux / macOS)

curl -fsSL https://hearthstream.dev/install.sh | bash

2. Debian / Ubuntu / Pop!_OS package

curl -fsSLO https://hearthstream.dev/hearth_0.1.0_amd64.deb
sudo apt install ./hearth_0.1.0_amd64.deb

3. From source

git clone https://github.com/hearth-stream/hearth
cd hearth/code
make build

Use it

# On the machine with your apps (the hearth):
hearth-agent serve

# In another terminal on the same machine:
hearth-agent pair

# On the device you want to USE your apps from:
hearth-client pair ABC-DEF-GHI --host <agent-ip>
hearth-client connect

# Prove everything is working:
hearth-agent selftest
hearth-agent doctor

Numbers

What works today

Honest status, updated as things ship.

FAQ

Is this just Parsec / Moonlight / Sunshine / RDP?
Those stream a whole desktop. Hearth streams one app as its own native window. You're not taking over the host's screen. Two people on two devices can each be streaming a different app from the same hearth, at the same time.

Is this just Tailscale?
Tailscale moves packets. Hearth moves apps. The mesh underneath is WireGuard (same primitives Tailscale uses) because that's the right primitive. The value is the capture + encode + per-window rendering on top.

Does my data leave my network?
Only if you want it to. When devices are on the same LAN, frames go LAN-direct. When you're away, traffic is end-to-end encrypted WireGuard — no Hearth server in the path, ever. No account required.

Why not just use a browser?
Browsers can't run your native apps. Browser tabs can't hold your Photoshop, your IDE, your DAW, your local AI models, your games, or the thousand little tools that have your settings and files in them. Hearth can.

Is this open source?
Yes. Apache 2.0. The Privacy Edition is a paid, signed, self-hosted bundle with installers for non-technical users — the code is the same, the convenience is the product.

Any screen you own becomes a window into the hearth.

Where this is going

• Native Mac, Windows, iOS, and Android clients
• Per-window capture on all three desktop OSes (the hard part; shipping week by week)
• The Privacy Edition — one-time $99, self-hosted, zero servers in the loop, ever
• Family tier: one hearth, isolated sessions for everyone in the house
• A Steam Deck / Pi / set-top client that's basically a dumb viewer