Unwatch all repositories under an organization

gistfile1.js

// select all unwatch buttons and filter by those belonging to THEORG
//  replace THEORG below with your own organization name
// visit https://github.com/watching then run the script in dev tool console
$('button:contains("Unwatch")').each(function() { 
 var $a=$(this).parent().siblings("a:contains('THEORG/')");
 if ($a.length == 1) {
    $(this).click();
 }
});