I'm looking for a server software product that:

• Allows my users to share large files with:

  • The general public
  • securely to 1 or more people (notification via email, optionally with a token that gives them x period of time to download)

• Allows anyone in the general public to share files with my users. Perhaps by invitation.

• Has to be user friendly enough to allow my users to use this with out having to bug me as the admin.

• It needs to be a system that we can install on our own server (we don't want shared data sitting on anyone else's server)

• A web based solution.

• Using some kind or secure comms channel would be good too, eg, ssh

• Files to share could be over 1 GB.

I found the question below. WebDav does not sound user friendly enough: http://serverfault.com/questions/86878/recommendations-for-a-secure-and-simple-dropbox-system

I've done a lot of searching, but I can't get the search terms right. There are too many services that provide this, but I want something we can install on our own server.

A last resort would be to roll my own.

Any ideas appreciated.

• Glen

EDIT

Sorry Tom and Jeff but Glen specifically says that he's looking for a 'product' so given that I specialise in this field thought that my expertise in this area may have been of use to him.

I don't see how him writing services is going to be easy for him to maintain going forward (large IT admin overhead) or simple for his users and the general public to work with.