Desktility

Desktility is designed to make life easier on Mac users. Most Mac users tend to keep icons on the desktop. Mac OS X will occasionally move them around for various reasons, from changing monitor resolutions, running certain apps, or rebooting. Desktility resolves this problem by automatically resetting the icons back to their home positions, saving you from the tedious task of reorganizing them. It can also save and restore your app's window positions.