Need script to store files that can be uploaded, organised, rated, commented etc...

I want to add a file system to my site that will allow users to upload, download, comment and rate files as well as section files into various categories and even list them by date etc...

If anyone has any suggestions that would be very much appreciated.

Thanks for your time.

 

which technology is used on your site? We work in ASP.net and can do this for you for a suitable fee