01
A new screen
One more monitor, on any side of any monitor. Drag a window over — it opens maximized on the tablet.
side: right · align: centerEmpowering anyone to stream anywhere.
Your phone or tablet becomes a second monitor, a mirror of your PC or a game screen. One QR code. That’s the setup.
3modes
1QR to pair
∞places to stream
01 · Modes
One phone. Four jobs.
New screen, mirror, game screen and away from home: pick the one you need, every time you connect.
02
Mirror any monitor
Show your main screen — or any other — exactly as it is, on the phone or tablet in your hands.
mirror: LG 27″03
A game screen
Your PC games on the sofa or in bed, streamed by Sunshine. Plug in a controller if you like.
up to your screen’s Hz04
Away from home
Leave the PC at home and take its screen with you — over 4G, 5G or any Wi-Fi, with Tailscale and your own account. No port to open.
encrypted · your account
Home PCWi-Fi
On the bus4G
Café5G
02 · How it works
Three steps. Once.
1
Install on your PC
OpenAlt sets up Sunshine with its own config — yours stays untouched. Linux today, Windows next.
2
Turn it on
Nothing runs until you press the button. Press it again and everything goes back to how it was.
3
Scan the QR
Open the OpenAlt app on the phone and point it at the code. It works once and expires in two minutes. No PIN.
03 · Any side
Any phone. Any side. Any monitor.
Right, left, above or below — of any monitor you have. Phone or tablet, standing or lying down. OpenAlt doesn’t assume your setup.
1 · 2 · 3 · 4+ monitorsphone · tabletstanding · lying downright · left · above · below
04 · Open source
Yours. Open. Private.
Free, forever
GPL-3.0. No ads, no account, no tracking. Read every line of the code.
Source code ↗1 QR
Single-use pairing code that expires in two minutes.
0
ports to open on your router. Away from home it goes through Tailscale, with your own account.
Built on giants
Streaming by Sunshine (LizardByte) and the Moonlight protocol. The Android app is a fork of Moonlight Android.
Moonlight Android ↗Linux
Available now. Windows is next; Wayland after that.
Android
Any phone or tablet with Android. The app scans the QR and connects on its own.
Download
Take your PC anywhere.
Install on the PC, get the app on the phone, scan once. Empowering anyone to stream anywhere.