mod_mylog is suite of Apache modules which provide sophisticated logging capabilities.
It uses an RDBMS to store its data.
X Message Daemon is a background program which displays simple text-based messages on your X display. You can choose parameters such as color, font, icon, and duration. It also has a frontend Perl daemon and client.
A free email application which is easy to set up and customize.
A diskless or systemless environment for client machines.