iFuntastic is a comprehensive application for Macs which allows you to fully customize your iPhone or iPod.
It features a fully comprehensive file manager for the iPhone and iPod's file system plus a host of other features which allow easy modification of text, settings, sounds and especially graphics. The developer warns that if you're using it on an iPod then you'll be able to use all the features of iFuntastic but if you're using an iPhone you'll only be able to use custom ringtones and copying your own files to and from the phone.
The rest of the features will require your iPhone to be unblocked. The list of things you can do if you do have it unblocked is quite impressive including changing e-mail signatures, importing screenshots and even turn your iPhone into an eBook reader.
iFuntastic is a very powerful iPod and iPhone admin tool but it does require an unblocked iPhone and of course, you use it at your own risk.
