Is there a way to generate an overview or listing of all slave sites in the master site?

O, found it already... Just by creating a new menu item this is possible.

O no, it is not. If you create a menu item to list all slave sites, the frontend user must be logged in to see (and edit) the list of slaves.

But that is not what I want. I just want an overview of all slave sites, visible to every web user, so they can come to my master website and click on a link to go to the slave site. Is that possible?

Not in standard.
If you want that we develop a specific component or module to do that this is possible with our billable support that you can order at www.jms2win.com/download?page=shop.produ...35&category_id=1

In the next release that will coming very soon, it is possible to create new themes for the front-end.
Therefore, it is theorically possible to change the themes to just list the information and remove all the stuff that is present to edit a slave site.

We have just check that a used is registered for security reason.