May 01, 2013, 4:26 PM — Here's how you can install the Windows List Indicator in Ubuntu 13.04.
1. Open a terminal window.
2. Type in the following commands then hit Enter after each.
sudo add-apt-repository ppa:jwigley/window-list
sudo apt-get update
sudo apt-get install window-list
For more, see the original article at the link below.