I have been working on this for about two months for the University of
Cincinnati. We are planning on releasing the project open source when
I need to port alot of things to a more general way of doing things and
refactor alot of code so this should get better daily.
There are some prieview images at my blog http://longint.net/Blog/?p=15
Currently it is just a file browser, it uses ajax has drag and drop and
upload with progress the whole bit.
The theme other than the banner was done by Ian Monk. other than that
done it all myself.
Try it out e-mail me if or when it breaks, i hope you like it.