BackOff is a small utility that can turn off automatic backup of both your iPhone and iPod Touch in iTunes so that to speed up the syncing process. While you will achieve somewhat faster speed, your important data might not get backed up. So use this app with care!
A simple click will turn off automatic backup and a click again will turn it back on. Even though the developer calms that it will speed up syncing, we have covered 5 simple ways to speed up iTunes(which is more important).
It works on Windows XP, Windows Vista, and Windows. The Mac version works on Tiger, Leopard, and Snow Leopard. It supports all iPhone and iPod Touch versions, but works on iTunes 9.0.2 only at the moment.