Simple addon that makes the Blizzard windows movable. To move a window just click title of the window and drag it to where you want it. You can also use control+scroll wheel over the title of a window to adjust the scale. The positions and scale will be saved only for the full screen windows such as the achievement window.
Move, hide, scale, and resize frames with independent x&y axes.
Hides Blizzard's raid frames.
Allows you to move and scale all of the Blizzard options panels. Scales will be stored between sessions.
Kong Automatic UI Hider
Can fade out elements of the user interface (Minimap, PlayerFrame, Recount, etc.) and then automatically show them again when moused-over, entering combat, or any of several other user-specified conditions are met.
Review: WoW Insider
Lets you move, scale, and hide anything.
Displays a movable frame to overwrite the default frame position of various frames. For example: Vehicle seat indicator frame, Boss target frames, Minimap, Quest Watch, Raid Mechanic, Durability Doll, many more.