Another IPC idea is to start a bash shell, and send it wget commands and collect output.

#!/usr/bin/perl 
use warnings;
use strict;
use IPC::Open3;

$|=1;

my $pid=open3(\*IN,\*OUT,\*ERR,'/bin/bash');

my $url = 'wget --spider -nv  http://zentara.net';

# setup a while loop here and feed it urls  
# while(@urls){

print IN "$url\n";
my $buf = '';
sysread(ERR,$buf,4096);
if($buf){print "ERROR-> $buf\n"}

sysread(OUT,$buf,4096);
if($buf){print "response->$buf\n"}

#}

waitpid($pid, 1);
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