Juice Drop

Juice Drop is a completely free utility for Mac OS X and Microsoft Windows allowing you to painlessly upload any files to your iPhone by just dragging them over the JuiceDrop window.

No Wi-Fi required! You can configure the mapping for file types you drag on and appropriate folders on the device we like to use it to upload FB2 books for our own i2Reader, for instance! No jailbreak on the phone is required.