Installation
Download the installer for: Windows 64
Installation of the launcher itself is merely a matter of downloading the installation file and extracting the contents to your computer. It is a standard zip file, so on Windows machines you can simply open it and drag the LauncherApps folder to your hard drive wherever it makes sense to you.
You will be creating a shortcut on your desktop or other handy location that is used to launch the program, so the LaunchApps folder can go anywhere in your system. You can always safely move it to another location as long as you update any shortcuts you've created.

If your version of windows doesn't support automatic zip file opening, you may need a utility such as 7-zip.
Applications that you add will be installed automatically to this LauncherApps folder.
Creating a Shortcut
After you've installed the LauncherApps folder, navigate to the LauncherApps/launcher/bin directory, find the run.bat file (you may need to enable display of program extensions in your file manager, or look for the gear icon) and create a shortcut to it on your desktop.
In Windows, you can do this by right-clicking on run.bat and select Send to → Desktop (create shortcut).
Note: Be sure to exit your File Explorer afterward, so that the program is able to update that folder when you first run it.
It is suggested that you set your run.bat - Shortcut icon to run in Minimized mode, and rename it to Launcher.
After the shortcut is created, simply double-click on it to to launch the program. The Launcher will go obtain the latest release and install it automatically, then you're ready to go!
There is also an experimental Linux Installer, but not all the applications are currently supported for Linux. MacOS has too many issues, so the launcher is not available for that platform.