Application processes that were invoked by the Application Builder can conveniently be killed if needed.
To kill all such processes, choose Works > Build > Kill All or click the button.
To kill just one such process choose Works > Build > Kill Application or click the dropdown to the right of the button. This raises a menu listing the invoked applications that are still running in the chronological order in which they were invoked. Select one item from the menu to kill that process.