Looking for an Image FTP server...

Well, I left it vague because I didn't know if there was a solution like this that we could host on our own server or if this is only found on a "file hosting server."

I'm open to a professional hosting solution...I just don't know of any.

On the other hand, I suspect that there's a solution (Joomla?) that might have this functionality but I just haven't experimented with these open source solutions enough to know.

FTP is not required.

Our clients need to be able to access about 20GB worth of images. We have servers we can put these images on but we don't have the snappy web interface that would allow the client to view and download. Of course we'd need to then enforce rules for different clients in a variety of folders.

The clients may need only 1 or all of the images.

So far we've been giving our clients access to our ftp but that's rather messy and if they aren't comfortable installing or using an ftp client, they run into problems. They usually try to download things using windows explorer but using this is inconsistent and if they have no technical savy, they get confused and call our Sales Department. Sales then calls me and asks why I can't make it easier.

In other words, they want the client to be able to view thumbnails of images that are available (something like Flickr).

They want to be able to download large versions of those images.

They want the interface to be web-based with no install

I would be looking for a solution that offers multiple file uploads/downloads...

Some of our clients need to upload so I would need to give some users write access (web-based) to unique folders/user.

While other clients just need to get images; these wouldn't need write access.

I've spent a day and a half looking on the web for a solution and can't seem to find exactly what I want. Any help on this is welcome.