So, after you told OSX to open the file even though it was downloaded, once OSX has verified the program you will then need to go to System Preferences->Security & Privacy and there you will see a button next to a description of Xtrkcad labelled ' Run Anyway'.This is because it did not come from the App Store and Apple is trying to protect you from malware.

After you have successfully installed XQuartz and dragged the XTrackCAD application into the Applications folder, you will find that when you try to open it, XTrackCAD will fail to start on OSX 10.10 and above.For OSX 10.10 up until 10.13 High Sierra,.Double clicking on the icon will not work (fail silently) until this step has completed once. You will be prompted to make sure you want to allow this program to run. To start the program for the first time in Catalina and above after install, please Right-Click on the icon in Finder and select Open.

This is because in Catalina and above, the normal Downloads and Documents folders are protected against access by non-app store programs like XTrackCAD.

Copy any layout files you want to use into the new folder from wherever you stored them.

Create a folder under your user home directory to house your layout files in Finder -> you can call this whatever you want, but we suggest XTrackCAD.

Drag the application onto the shortcut and it will be copied into the Application folder.

You will see the application icon and a shortcut to the /Applications folder. dmg package from SourceForge DownloadInstall. Please read these instructions as they have changed as a result. Note that latest updates to OSX 10.14 (Mojave), and any versions of OSX 10.15 Catalina and up, contain extra security precautions that discriminate against programs that did not come from the App Store.

If you have disabled XQuartz previously, for any reason, a complete uninstall and re-install may be the easiest way to get going, and this re-install is always needed after a OSX version upgrade.

You can start it by itself and run XTerm with in it (right-click on the running X icon) to test your install. Other install instructions for XQuartz are on that same web site. If you forget this, XQuartz will be unable to provide a 'Display' to the application, meaning it will fail to start.

Once you have installed it you need to logoff and on (or restart the Mac) once to allow the X system to be fully enabled.

Go to and download the installer and run it to completion - it takes a couple of minutes so some patience is required.

To run XTrackCAD you first need to install XQuartz -> the open-source version of X11. See DownloadInstall for download instructions

Mac os install xquartz