MATE and LTSP
There are a lot of people in the world who get access to their GNU/Linux desktops via thin clients, and one of the longest running thin client projects out there is the LTSP project. The MATE desktop offers a fantastic desktop experience on thin clients; fast, stable, and efficient. Libraries, schools, and businesses looking for a GNU/Linux desktop using traditional paradigms their users are used to will find MATE a excellent alternative to going to a Unity/Gnome 3 desktop. As both an LTSP and MATE developer, I put together a short video on some of the developments in both.