SLiM

SLiM (Simple Login Manager) is a desktop-independent graphical login manager for X11.

Installation
You can install SLiM using the following command:

Additional themes can also be installed:

To make SLiM start automatically after boot, set the DISPLAYMANAGER in /etc/conf.d/xdm to slim:

You will also need to add xdm to the default runlevel:

Configuration
All configuration is done in /etc/slim.conf

By default, SLiM is configured to make all sessions in /etc/X11/Sessions/ accessible -- you can cycle through them by pressing the F1 key. This behavior is acquired by setting the options below:

More tweaks
Theme selection is done by changing the following line:

You can easily find what themes are available on your system:

The NumLock key can be turned on or off by default: