Your CGM data,
on any screen

Trndi is made by one person, not a big company, so Windows has never heard of it and shows a blue warning the first time. That is normal. Here is what it looks like and what to click:

1. Click the small More info link.
2. Click Run anyway.
3. Follow the installer. Trndi opens and asks how to connect to your CGM.

The portable version has no installer: it is a folder you keep wherever you like, on a USB stick if you want. Windows still shows its blue warning the first time you start it.

1. Right-click the downloaded .zip and choose Extract All…. Pick a folder you will keep, for example Documents\Trndi. Do not run it from inside the zip window.
2. Open that folder and double-click Trndi.exe.
3. Windows says Windows protected your PC. Click the small More info link, then Run anyway. It only asks once.
4. Trndi opens and asks how to connect to your CGM.

Nothing is added to the Start menu. Make a shortcut to Trndi.exe yourself if you want one. Settings are stored in the Windows registry, not in the folder.

Trndi is made by one person, not a company that pays Apple to sign apps, so your Mac will refuse to open it the first time. Two minutes fixes it:

1. Open the downloaded .dmg and drag Trndi into Applications, like any other app.
2. Open Terminal: press ⌘+Space, type Terminal, press Enter. A plain text window opens.
3. Copy this line, paste it into that window, and press Enter:

   xattr -c /Applications/Trndi.app

   Nothing visible happens. That is fine.
4. Open Trndi from Applications. It asks how to connect to your CGM.

Why? The line removes the "downloaded from the internet" mark that makes macOS block unsigned apps. It changes nothing else. See the macOS notes.

1. Double-click the downloaded .deb and your software installer takes it from there. Or, in a terminal:

   sudo apt install ./trndi_*.deb

2. The package asks for Qt6Pas, so on Debian 13 and Ubuntu 25.04 and newer that library is installed alongside and you are done. On older releases it is not in the repositories, so the package installs without it and Trndi will not start — install it yourself first, as the table below shows.
3. Start Trndi from your app menu. It asks how to connect to your CGM.

1. Double-click the downloaded .rpm and your software installer takes it from there. Or, in a terminal:

   sudo dnf install ./trndi-*.rpm

2. The package asks for Qt6Pas, so on Fedora 43 and newer that library is installed alongside and you are done. On older Fedora, or where the package is spelled differently, install it yourself first, as the table below shows.
3. Start Trndi from your app menu. It asks how to connect to your CGM.

An AppImage is a single file that runs without installing. Trndi's does not carry the Qt6Pas library inside it, so that one thing has to be installed first.

1. Install Qt6Pas with your package manager — the table below gives the command for your distribution.
2. Make the file executable: right-click it, Properties, tick Allow executing as program. Or in a terminal:

   chmod +x Trndi-*.AppImage

3. Double-click it. Trndi opens and asks how to connect to your CGM.

Nothing is added to your app menu. The GNOME and KDE panel indicators are inside the AppImage but need copying out by hand; the .deb and .rpm install them for you.

The .zip is the bare program folder, for people who prefer not to install anything. It does not carry the Qt6Pas library, so that one thing has to be installed first.

1. Install Qt6Pas with your package manager — the table below gives the command for your distribution.
2. Unpack the zip somewhere you will keep it, then run Trndi from that folder:

   unzip Trndi-linux-*.zip -d ~/trndi
   ~/trndi/Trndi

3. Trndi opens and asks how to connect to your CGM.

Nothing is added to your app menu. If you want that, the .deb or .rpm is the easier choice.

Click one of the packages above and the steps for that file appear here.