I think that I found it...

HTML::Perlinfo.

I have over 20,000 modules, so it took a half-hour to get all the info, and it took another ten minutes to display on Firefox.

#!/usr/bin/perl

use HTML::Perlinfo;

$|=1;

open STDOUT, '>', 'modinfo.html';
print perlinfo(INFO_MODULES);
close STDOUT;
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