The 2 major groups of software program are application software and also system software program. The most usual kind of software program, application software application is a computer software application bundle that performs a specific feature for a customer, or in some instances, for one more application. System software application http://history.lib.ntnu.edu.tw/wiki/index.php/%E4%BD%BF%E7%94%A8%E8%80%85:Toolx9