iOS: filesharing without iTunes?

I develop an enterprise application for iOS and the user should be able to add files from the desktop to the application.

I implemented this using filesharing, which works great.

Now this company wants to get rid of iTunes from their machines (which is quite understandable, iTunes is a very invasive process).

The question is, is it still possible to somehow use filesharing without iTunes? maybe with another application?

Or what other way is there to send files to the app (preferrably without the need of an internet connection)

//edit: must work on windows 7 and must not require to install iTunes (there are some other tools that allow access to the iPad filesystem, but they go through drivers installed by iTunes)