TurnKey Linux

TurnKey Linux is a new open source project that aims to develop high quality software appliances that are easy to use, easy to deploy, and free. In a nutshell, they believe everything can be easy, and should be easy!

Packaging a solution as a software appliance can be incredibly useful because it allows you to leverage guru integration skills to build ready to use systems (I.e., turn key solutions) that just work out of the box with little to no setup. http://www.turnkeylinux.org/