The two major groups of software application are application software and also system software application. The most common kind of software, application software program is a computer system software plan that carries out a specific feature for a customer, or in some instances, for another application. System software sits in http://history.lib.ntnu.edu.tw/wiki/index.php/%E4%BD%BF%E7%94%A8%E8%80%85:Toolx9