Does anyone here know of a program or method by which to automatically force-close all threads of a running process when a "quit" or "close" action is utilized? Example: At various times, the Firefox process will continue to run in the background after the browser window has closed. I am looking for 3rd party software (or any other means) that has, for instance, user-defined rules, etc that ensure a process ends when its parent program closes. I hope you guys can help. Thanks!