StartOncePer - Version 1.00 Well, it's simple: Windows can launch any program on its start. But perhaps you want your mail-client to be started only on the first boot of the day. Or your virus-scanner only every monday morning. That's exactly what StartOncePer is for. It enables you to do such things very very easy. Your program can be started every day, on a certain day of the week or on the x. of every month.