Show Only Active Applicationsīy default, OS X’s Dock displays all active applications as well as inactive applications and folders that the user wants to keep handy. If you don’t like the new look and want to change back to the default 3D Dock, simply retype the Terminal commands above and replace “YES” at the end with “NO” (again, remember to type “killall Dock” afterwards to force the change to take effect). Although the 2D Dock looks a bit different than its predecessors in earlier versions of OS X, the change still gives user the general look they were missing.