FileMagnet from Magnetism Studios is a simple, yet elegant, iPhone app. Its primary function is to make it easy to shuttle files back and forth between your desktop and iPhone and it does that very well.
The first thing you do is ensure your iPhone and PC are on the same Wi-Fi network — it won’t work otherwise. (…)

Files Lite is an app that gives you the ability to sync docs directly to your iPhone. Along with the free download, you must create a connection between your iPhone and your computer for syncing files. This of course, also means being on the same WiFi network when it’s time to sync. (…)

FileSync offers a solution to the dilemma of not being able to view your docs when you are away from your computer.
You have to set up an FTP connection in order to send files back and forth to your iPhone - a bit of technical knowledge you should make sure you can master before you decide to part with your $4.99. (…)

Briefcase Lite seeks to turn your iPhone into a briefcase for your docs (not that anyone keeps large files in briefcases all that much anymore, but that is for another day). (…)

TextGuru is a serious text editor. And for those that need it, this program is on the cutting edge in productivity apps. It offers Text editing including cut, copy, paste, find and replace, and auto save. (…)

For the next week, you can download a copy of “Air Sharing” — yet another file storage on your iPhone app — free. (…)

The iPhone comes with either 8Gb or 16Gb of memory; why shouldn’t you be able to use this memory as a giant USB stick to store your personal files / videos / mp3?
The answer is of course, that you should, but that Apple wants to control as much of this as possible. (…)

DataCase from VeloSoft was recently covered in TechCrunch as a “highly anticipated” storage app. We tested it, and found that it does work, but has some serious limitations.
First, of all, the test. After installing the App, there are no instructions on how to get it working, and no help on the VeloSoft web site. (…)