Linux GDM is a GDM login screen theme.Gdm (the GNOME Display Manager) is a highly configurable reimplementation of xdm, the X Display Manager. Gdm allows you to log into your system with the X Window System running and supports running several different X sessions on your local machine at the same time. This tutorial will explain how to install GDM theme in Ubuntu.

KDM (KDE Display Manager) is the K Desktop Environment replacement for XDM, the X Display Manager. KDM allows users to pick their session type on a per-login basis using different themes and user photos.

GDM is the GNOME Display Manager, a graphical login program, which provides a simpler alternative display manager for the X Window System's XDM. GDM is released under the GNU General Public License (GPL). The X Window System by default uses the XDM display manager. However, resolving XDM configuration issues typically involves editing a configuration file.

When you customized your Ubuntu desktop to replace the brown theme, you may have overlooked the login window. GNOME’s login window, called GDM (GNOME Display Manager), can be easily customized by installing themes.

KDM (KDE Display Manager) is the default graphical login interface of the K Desktop Environment. Anyone who uses KDE should know that KDM is highly customizable and can be easily configured.If you are already bored with your simple KDE login screen, you can spice it up a little through theming.

GDM or GNOME Display Manager will easily allow anyone to fully customize the login screen theme without having to use the command line.There are tons of ready-made, user-submitted GDM themes available that we can just download and effortlessly install.

GDM (Gnome Display Manager) is the graphical login program which you see when you log-in to your Linux computer. GDM used to support themes and a lot of other customizations - all available through the "Login Screen" option under System > Administration - but the new GDM2 (2.28) which comes with Ubuntu Karmic for instance, doesn't support all this unfortunately.

gstyle is a full gnome theme manager this software try to concentrate every possibles themes types in one main window with easy install of new themes form gnome-look, deviantart, customize.org or by direct download from the software.

Ubuntu 11.10, the latest stable release of the popular Linux distribution, sports two guest accounts, one in the login screen and the other accessible from an active user session. Both are tightly coupled to LightDM, the new display manager.