PodWorks is an application that compensates for the iPod's only downside: Apple only allows you to copy songs to your iPod. If you have two Macs and want to use your iPod to transfer music from one to the other, or you only store your MP3s on your iPod and need to copy them back onto your hard drive after a disk failure, you are out of luck!
This is where PodWorks comes in: it allows you to copy songs from any Mac iPod to any Mac running OS X (10.3).
PodWorks has been consistently recommended by Mac authorities, including the Wall Street Journal's Walter Mossberg.