If you are tired of installing pc applications one by one just like Ms Office,Antivirus and any other applications, here's the tip for you. Use the WPKG software deployment. You can use this package in Windows and Linux.
Read the full details on their site.
http://wpkg.org/Here are some cool stuff. Just search it and understand.
PXE server - network booting
Backuppc - a fastest way of getting data of a client.
Nagios - server and network monitoring
LVS(heartbeat and ldirectord)
Mydns - save hostnames using mysql database server
FreeNac - Network Access control
rsync
SVN
MyDLP - Data Loss Prevention
Wake up LAN - open a turn off computer through LAN
These are the terms that you can search and it's for you to study and test it. If you have some questions just post it...
Good luck SNA...