Question thanks to Katte, on March 19, 2017.

One way to do this is to edit your Theme Template files. To loop through a list of all syndicated links, use FeedWordPress::syndicated_links(). Here’s an unsophisticated version of some code that should display the name of all syndicated sites in a ul list tag:

print "<ul>
foreach (FeedWordPress::syndicated_links() as $link) :
    $sub = new SyndicatedLink($link);
    print "<li>" . $sub->name() . "</li>\n";
endforeach;
print "</ul>\n";