Sound switchers beep once at the new volume, and then quit.
Colour switchers switch to the desired colour depth and Gray switchers switch to the desired gray-scale mode. If the Ctrl key is pressed when activated, they attempt to switch the depth of all displays, instead of just the main one. If the Command key is pressed when activated, the Colour switchers will switch to the approporiate gray-scale mode. Should not now crash when run on machines without colour Quickdraw. All come with balloon help, and are free.