Get Kutrion

Both Linux builds are unsigned, and the .deb is a standalone file rather than an apt repository. Nothing will block you from installing, but apt cannot verify or upgrade it for you.

1. AppImage: make it executable with the command below, then run it. Without the executable bit a double-click does nothing and reports no error.
2. Debian or Ubuntu: install the .deb with `sudo apt install ./Kutrion-API-1.1.6-amd64.deb` — apt resolves its dependencies, `dpkg -i` alone does not.

chmod +x Kutrion-API-1.1.6-amd64.AppImage

Both builds are unsigned, so Windows stops the installer the first time you run it. Linux does not block anything, but the AppImage needs one command before it will start.

1. Windows: run the installer. SmartScreen shows "Windows protected your PC" — choose More info, then Run anyway. There is no way to avoid that prompt until the installer is signed.
2. Linux AppImage: make it executable with `chmod +x Kutrion-Transfer-1.1.9-x86_64.AppImage`, then run it. Without the executable bit a double-click does nothing and reports no error.
3. Debian or Ubuntu: install the .deb with `sudo apt install ./Kutrion-Transfer-1.1.9-amd64.deb` — apt resolves its dependencies, `dpkg -i` alone does not. There is no apt repository behind it, so apt cannot upgrade it for you.

There is no macOS download here yet. The build needs a Mac to produce and none has been published, so this card covers Windows and Linux only.

Every build of this client is unsigned, so all three operating systems stop it the first time you open it. That is normal for a beta build and takes one extra step on each of them.

1. macOS: drag Kutrion Terminal to Applications, then clear the download quarantine with the command below and open it normally. If you would rather not use Terminal: System Settings, Privacy and Security, Open Anyway.
2. Windows: run the installer. SmartScreen shows "Windows protected your PC" — choose More info, then Run anyway. There is no way to avoid that prompt until the installer is signed.
3. Linux AppImage: make it executable with `chmod +x Kutrion-Terminal-1.1.9-x86_64.AppImage`, then run it. Without the executable bit a double-click does nothing and reports no error.
4. Debian or Ubuntu: install the .deb with `sudo apt install ./Kutrion-Terminal-1.1.9-amd64.deb` — apt resolves its dependencies, `dpkg -i` alone does not. There is no apt repository behind it, so apt cannot upgrade it for you.

xattr -d -r com.apple.quarantine "/Applications/Kutrion Terminal.app"

On macOS, Control-clicking the app and choosing Open will not work. Apple removed that bypass in macOS 15.

Neither build is signed by a browser store, so both load as unsigned extensions. Chrome and Edge take the .zip in developer mode and keep it; Firefox takes the .xpi only as a temporary add-on.

1. Chrome or Edge — the route that lasts: download the .zip, unzip it, open chrome://extensions, turn on Developer mode, choose Load unpacked and select the unzipped folder. It stays installed across restarts.
2. Firefox — testing only: open about:debugging#/runtime/this-firefox, choose Load Temporary Add-on and select the .xpi. It works immediately and is gone the next time Firefox starts.
3. Either build talks to this site and no other, so sign in through the extension once it is loaded.

unzip kutrion-extension.zip -d kutrion-extension

Release Firefox will not install the .xpi permanently: Gecko refuses an add-on AMO has not signed, and AMO signing is not available to this project. The temporary add-on lasts until Firefox restarts, so Chrome's unpacked load is the durable one.

This beta is not signed with an Authenticode certificate, so Windows SmartScreen interrupts the installer the first time you run it. That is normal for a beta build and takes one extra click.

1. Run the installer you downloaded.
2. SmartScreen shows "Windows protected your PC". Choose More info, then Run anyway.
3. The installer then runs normally and installs Kutrion for the current user.

There is no way to avoid that prompt until the installer is signed, and no setting on your machine changes it — an Authenticode certificate is a purchase rather than a build option.

Both Linux builds are unsigned, and the .deb is a standalone file rather than an apt repository. Nothing will block you from installing, but apt cannot verify or upgrade it for you.

1. AppImage: make it executable with the command below, then run it. Without the executable bit a double-click does nothing and reports no error.
2. Debian or Ubuntu: install the .deb with `sudo apt install ./Kutrion-1.1.7-amd64.deb` — apt resolves its dependencies, `dpkg -i` alone does not.

chmod +x Kutrion-1.1.7-x86_64.AppImage

Installs with npm from the downloaded file. It needs Node 18 or newer, and it has no default server — you tell it which Kutrion deployment to talk to, which is why the same build works against any deployment.

1. Check your Node version first: `node -v` must report 18 or newer.
2. Download the tarball, then install it from the folder you saved it in with the command below. The leading ./ is required — without it npm reads the name as a git repository, not a file.
3. Point it at a server the first time: `kt --base <url> login` remembers that server, or export KT_API_BASE, or pass --base on a single command.

npm i -g ./kutrion-cli-1.1.6.tgz

`npm i -g @kutrion/cli` does not work — the package is not on the public npm registry. The tarball needs no account and pulls in no dependencies.