atrium
Private beta · Coming soon

Own your
smart home.

A local-first, open-source platform. The brain runs on open hardware in your house. Your phone talks to it directly, end-to-end encrypted. Only your keys open your home.

Get notified at launch View on GitHub
Open hardware· No account required· End-to-end encrypted· Yours forever
01 · Atrium

A platform you can read, run, and change.

An atrium is the open heart of a home. Atrium is the same idea, in software.

We built one into yours: a safe space at the center of your home, tying together your devices, your phone, and your routines.

And it's open source. Not as a feature. As the whole point. Privacy you can read is privacy you can verify.

A smart home should be easy, fun, and yours.
02 · How it works

A direct line
to your home.

End-to-end encryption is core to the design. Your phone and your home each hold their own keys, and only those two endpoints can read what flows between them.

Anywhere in the world Phone holds its own key. End-to-end with your home.
Lantern node Introduces the two ends and steps aside. Use ours or run your own.
Open hardware at home Atrium on a Pi or your own box. Local-first. Your keys.

Your devices

Lights, locks, and sensors speak Matter and Thread straight to your hub. Everything runs on your local network. If your internet drops, your home keeps working.

Your phone

Opens a direct, end-to-end encrypted connection straight to your home. At home, it stays on your Wi-Fi. Away, a small Lantern introduces the two ends and steps aside.

Pairing

Setup happens on your local network. Scan the QR on your hub and your phone gets a signed device cert. Write down the recovery phrase the hub shows you, and you're done.

Push notifications

Push goes through Apple and Google. That's just how phones work. We send an opaque ID to wake the device, and the actual notification gets fetched from your home, encrypted, when you tap it.

Local-first, always

Yours to keep.
Yours to run.

The brain that runs your home lives in your home, on your hardware, with your keys. No data center, no login, no subscription quietly renewing in five years.

  • No subscription. Not now, not ever.
  • No cloud account required.
  • Works on its own if your internet drops.
  • Works on its own if we go out of business.
03 · What you get

Smart home, your way.

F.01

Local control

Works offline. No account required. Your routines run in your home, on your hardware.

F.02

A native UI

Built with Slint. Native and fast. Run it on a wall-mounted display, a tablet, or skip it entirely.

F.03

Home or away

End-to-end encrypted, always. Direct, peer-to-peer between your phone and home. A small Lantern introduces your phone to your home, then steps aside.

F.04

Bring your own devices

Atrium speaks Matter and Thread, the open standards backed by Apple, Google, and Amazon. Pick the brand you like, and it'll just work.

04 · Who it's for

For everyone,
technical or not.

Self-hosted doesn't have to mean technical, and local-first doesn't have to be a hobby project. Atrium is as easy as a cloud product if that's what you want, and as open as a code editor if that's what you want too.

AIf you want it to just work

  • Plug it in, open the app, and add devices, build automations, and manage your home from one easy interface.
  • Updates land automatically, so your hub stays current and secure.
  • Remote access works from anywhere. Your phone connects directly to your home, no router settings to change.
  • No cloud account, no vendor lock-in, and nothing to maintain on weekends.

BIf you want to make it your own

  • Every line is open source. Read it, run it, change it.
  • Pin a release and update on your own schedule.
  • Run your own Lantern for peer discovery, or use ours. Switch whenever you want.
  • Customize the UI, the automations, and the firmware itself.
05 · For builders

Built in the open.

Read the code, run the code, change the code. Atrium is open source so you can verify the privacy claims yourself.

·01 · runtime

Elixir + OTP

Elixir is a friendly language. OTP is the runtime underneath, built to keep thousands of small processes alive, recover when individual ones fail, and run for years between reboots. A smart home is a small distributed system. The match is exact.

·02 · ui

Slint

Slint is easy to build UIs in. The language is declarative, the styling is yours to customize, and the compiler produces native binaries fast enough for modest hardware. Every home is different, and a smart home UI should feel like the home it's in.

·03 · devices

Matter + Thread

Matter and Thread are open device standards backed by Apple, Google, Amazon, and the rest of the industry. They work locally, work across brands, and keep working for as long as you do. Pick the device you like and it'll just work.

·04 · transport

QUIC

QUIC is the modern, encrypted transport behind HTTP/3. It's fast to set up and end-to-end encrypted by default. Your phone and your home open a direct QUIC connection to each other. A small node we call Lantern introduces the two ends and steps aside. It holds no keys and isn't in your data path.

Read the source →
06 · Get notified

Be the first to know
when Atrium ships.