Mac Shutdown X is an amazing small utilities designed for Mac OS X to shutdown the Mac on a specified event (as an example when a file download using Safari is finished) or on a specified date and time. This small utility can really help a lot users who start download of big files over the net and like to have the Mac automatically turned off when the download is finished.

It is customizable using an easy to use setting setup panel (no coding required). You can choose to shutdown the Mac when a specified event happens (when a Safari file download is finished) or on a specific date and time.