TimeMachineEditor is a software for Leopard that lets you change the default one-hour backup interval of Time Machine.

You can change the interval or decide to make a backup once a day, once a week or once a month.

This is usefull if you don’t need to backup every hour and don’t want the performance penalty. This is also especially useful if you intend to manipulate lots of data within one hour as you would spend the whole day backing up.

TimeMachineEditor merely updates a system configuration file to change the Time Machine scheduling. If you want to revert the change back to the original setting, you just need to apply a new schedule with an interval of one hour.

Once you have changed the scheduling, you can still use the Time Machine preference pane from “System Preferences” as you did before. However the preference pane won’t reflect your new scheduling, in particular the next backup date won’t be correct.