title: How do I list installed MSI from the command line?
body: <p>
  We recently switched our Windows software packages from RPM (cygwin) to MSI (wix). Having a native packaging is a much welcome change and we intend to stick with it. However, MSI feels overly complicated for what it does and doesn't seem to provide some basic abilities. But I'm probably mistaken.
  </p>
  <p>
  Is there a way to list all installed MSI from the command line ?
  </p>