I want a link opening in another browser tab and not the user is located.
<?=__('Development by ').$this->Html->link('Test','http://www.test.cl',array('class'=>'orange-link'));?>
First, don't use php short tags, they simply suck and can cause issues.
Learn some HTML basics: http://www.w3schools.com/tags/att_a_target.asp
The target attribute specifies where to open the linked document.
$this->Html->link('Lixsys','http://www.lixsys.cl',array(
'class'=> 'orange-link'
'target'=> '_blank'
));
You must use the target _blank that opens a new blank tab you want to open the link and the link arm use $this->Html->link
http://book.cakephp.org/2.0/en/core-libraries/helpers/html.html