[xwiki-users] Doing a File Exchange App

I'm being asked to do a File Exchange application in XWiki. Basically giving the users the ability to upload and download files for each others use. My first thought was to simply use different pages for collections and have people use the built in file attachment stuff. However, I'm being told that isn't intuitive enough, so I'm looking to do some sort of FTP like thing where paths can be created and files uploaded to those paths to be later downloaded by others. I guess my question is, does anyone know of an existing app that does this, or am I going to have to create this myself? Thanks, Lenny