Good news for those of you who liked the old Gnome environment on Centos6, Gnome is now available on Centos7 and Scientific Linux 7.  It has been, up to this point, unavailable because of the unavailability of gnome-flashback, necessary for remote Gnome Desktop access, but I found an “unofficial repository” that contained it so it is now installed.

     Also newly installed is the “KDE Plasma Workspaces” desktop.  Part of KDE was previously available but now there is a group and the full group is installed.  There is also a group for Mate now which makes it a more complete install than it previously was.

     And one more Desktop, LXQT, a fairly light Desktop similar to LXDE except using the QT graphical interface, is now also installed.

     Have fun!