DropCopy is an application for the iPhone and Mac that makes copying files to your iPhone from a Mac, or vice versa, simpler than ever before. DropCopy is only for Mac OSX, so sorry Windows users.  Windows users are SOL because the company does not intend to port it over.

DropCopy works on a jailbroken iPhone or iPod Touch. The application is simple, and dead efficient. The application runs on the Mac in the background, allowing easy access. You browse your Mac for files to transfer, and when you see something you like, you just drag it to a circle near the top left of the desktop. You will then be prompted to select a destination iPhone or iPod Touch, and voila, done. Files transferred to your iPhone via DropCopy are stored in the ~/Media/DropCopy folder by default, but another folder can be chosen if desired.

Transferring files from your iPhone is just as easy. You open up the DropCopy application on the iPhone, and you are greeted with a help screen to tell you how to do it. DropCopy is great for quick transfers, and is a good alternative to SSH. The application only allows transfers to the iPhone when it is open, it does not run in the background, and poses no security risk.

You can get DropCopy for your Mac from here. For the iPhone, the application is already listed in Installer.