On macOS, installation is very simple. Download MultiViewer, open the DMG, and drag the app to your Applications folder. That's all! You may be prompted to allow network connections, which is required for MultiViewer to work.

Download the installer from the website, and run it. Installation may take some time, but once it's done, you'll have a new icon on your desktop. When opening, you may be prompted with a Windows SmartScreen warning. This is normal, and you can safely click "More info" and "Run anyway". You may also be prompted to allow network connections, which is required for MultiViewer to work.

Use the .deb on Debian, Ubuntu and Mint, and the .rpm on Fedora and RHEL. Both add our package repository when you install them, so MultiViewer updates along with the rest of your system.

1. Retrieve the latest .deb or .rpm of MultiViewer for Linux from the downloads.
2. Open the file with your package manager, or install it from a terminal with sudo apt install ./multiviewer_2.14.0_amd64.deb or sudo dnf install ./multiviewer-2.14.0-1.x86_64.rpm, using the file name you downloaded.
3. The application now runs. You may also get a firewall notification, this is because we start a local server to serve the application's files from, to get around some of the F1 TV/Electron limitations.

The .deb adds the MultiViewer repository to apt, and the .rpm adds it to dnf. New versions then show up with your other system updates. When MultiViewer sees a new version, it shows the command to install it right away:

sudo apt update && sudo apt install --only-upgrade multiviewer

sudo dnf upgrade --refresh multiviewer

The first time dnf reads the repository, it asks you to import our signing key. Check that the fingerprint is 41021F622AF9ACD655FB3261C9B01C9F32A9B615 before you accept it.

MultiViewer 2.13.1 and older didn't add the repository. If you have one of those installed, install the current .deb or .rpm over it once. After that, it updates through apt or dnf.

The repository has a stable and a beta channel, and the packages start you on stable. To get beta versions, switch the channel and update:

sudo sed -i 's/^Suites: stable$/Suites: beta/' /etc/apt/sources.list.d/multiviewer.sources

sudo sed -i 's#/stable/#/beta/#' /etc/yum.repos.d/multiviewer.repo

Updates keep your change. To go back, swap beta and stable in the same file. apt and dnf don't go back to an older version, so you stay on the beta until a newer stable version comes out.

To install MultiViewer straight from the repository, or to repair an install whose repository file is gone, add the repository yourself. On Debian, Ubuntu and Mint:

curl -fsSL https://apt.multiviewer.app/multiviewer.asc \
  | sudo gpg --dearmor --yes -o /usr/share/keyrings/multiviewer-archive-keyring.gpg
sudo tee /etc/apt/sources.list.d/multiviewer.sources > /dev/null <<EOF
Types: deb
URIs: https://apt.multiviewer.app
Suites: stable
Components: main
Architectures: $(dpkg --print-architecture)
Signed-By: /usr/share/keyrings/multiviewer-archive-keyring.gpg
EOF
sudo apt update && sudo apt install multiviewer

On Fedora and RHEL:

sudo tee /etc/yum.repos.d/multiviewer.repo > /dev/null <<'EOF'
[multiviewer]
name=MultiViewer
baseurl=https://rpm.multiviewer.app/stable/$basearch
enabled=1
gpgcheck=0
repo_gpgcheck=1
gpgkey=https://rpm.multiviewer.app/multiviewer.asc
EOF
sudo dnf install multiviewer

sudo apt purge multiviewer and sudo dnf remove multiviewer remove the repository along with the app. sudo apt remove multiviewer keeps it.

The Flatpak is still in beta and has a few known bugs. If you hit one, the .deb, .rpm or zip builds above are the safer choice for now.

The Flatpak we publish is a bundle, not a Flathub app, so flatpak needs the Flathub remote to pull the runtime it's built on. If you don't have that remote yet, add it with: flatpak remote-add --user --if-not-exists flathub https://dl.flathub.org/repo/flathub.flatpakrepo

1. Retrieve the latest .flatpak of MultiViewer for Linux from the downloads.
2. Install it with flatpak install --user ./MultiViewer-x86_64.flatpak, using the file name you downloaded.
3. Start MultiViewer from your app launcher, or run flatpak run app.multiviewer.MultiViewer.
4. The application now runs. You may also get a firewall notification, this is because we start a local server to serve the application's files from, to get around some of the F1 TV/Electron limitations.

The Flatpak doesn't update itself. When a new version comes out, download the new bundle and install it the same way.

1. Retrieve the latest version of MultiViewer for Linux from the downloads.
2. Unzip the downloaded ZIP file to a location of your choice.
3. Run chmod +x ./multiviewer; ./multiviewer in the folder you unzipped to
4. The application now runs. You may also get a firewall notification, this is because we start a local server to serve the application's files from, to get around some of the F1 TV/Electron limitations.

The zip doesn't update itself. When a new version comes out, download the new zip and unzip it over the old folder.

On a Wayland session MultiViewer tries to restart itself on XWayland, because Wayland gives an app no way to position or drag its own windows. That switch doesn't always work. If windows won't drag, or end up in the wrong place, pass the flag yourself:

1. Download the Linux (zip) version of MultiViewer from the downloads.
2. Unzip the downloaded ZIP file to a location of your choice.
3. Run chmod +x ./multiviewer in the folder you unzipped to
4. Start it with ./multiviewer --ozone-platform=x11, which has been reported to fix window management issues on Bazzite and similar setups.

The same flag works with the other Linux packages: run multiviewer --ozone-platform=x11 for the .deb/.rpm install, or add the flag to flatpak run app.multiviewer.MultiViewer for the Flatpak.