The KDE login manager.
It seemed nice, but it wasn't ready for life when I tested it.
abandoned - as of 2020-06-01 not updated since 2013-10-02
[ + ]
(comes with X windows)
A basic display manager, to let the user boot into a login screen.
It gets the job done. It lacks user-switching and poweroff/suspend functionality.
XDM = X Window Display Manager
a login manager