Alteration of Gruber's script to work with other browsers. See http://www.leancrew.com/all-this/2010/08/open-urls-in-default-browser/

Open URLs in Safari Tabs.pl

#!/usr/bin/env perl

# Description: http://daringfireball.net/2010/08/open_urls_in_safari_tabs
# License: See below.
# http://gist.github.com/507356

use strict;
use warnings;
use URI::Escape;

my $text = do { local $/; <> };
my @urls;
my $url_regex = qr{(?xi)
\b
(							# Capture 1: entire matched URL
  (?:
    [a-z][\w-]+:				# URL protocol and colon
    (?:
      /{1,3}						# 1-3 slashes
      |								#   or
      [a-z0-9%]						# Single letter or digit or '%'
      								# (Trying not to match e.g. "URI::Escape")
    )
    |							#   or
    www\d{0,3}[.]				# "www.", "www1.", "www2." … "www999."
    |							#   or
    [a-z0-9.\-]+[.][a-z]{2,4}/	# looks like domain name followed by a slash
  )
  (?:							# One or more:
    [^\s()<>]+						# Run of non-space, non-()<>
    |								#   or
    \(([^\s()<>]+|(\([^\s()<>]+\)))*\)	# balanced parens, up to 2 levels
  )+
  (?:							# End with:
    \(([^\s()<>]+|(\([^\s()<>]+\)))*\)	# balanced parens, up to 2 levels
    |									#   or
    [^\s`!()\[\]{};:'".,<>?«»“”‘’]		# not a space or one of these punct chars
  )
)
};

# Build an AppleScript-syntax list of the URLs in the input text.
while ($text =~ m{$url_regex}g) {
	my $u = $1;
	$u =~ s{([\x{80}-\x{ffff}])}{uri_escape($1)}eg; # Encode non-ASCII characters
	push @urls, qq{"$u"};
}
  
# Simplification by Dr. Drang (drdrang@gmail.com) on 8/4/2010. See description at
# http://www.leancrew.com/all-this/2010/08/open-urls-in-default-browser/
for (@urls) {
  `/usr/bin/open -g $_`;  # opens without bringing to browser to foreground
  # `/usr/bin/open $_`;  # opens and brings browser to foreground
}

__END__

LICENSE

http://www.opensource.org/licenses/mit-license.php

Copyright (c) 2010 John Gruber

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.