DockView extends Mac OS X’s Dock and shows window previews whenever you hover your mouse over an application or while using CMD+Tab. It helps you visualize the windows you currently have open and easily find the window you are looking for.
Features:
Live previews. The previews refresh constantly so you can keep an eye on windows without activating them.
Customizable. The previews can be any size you want and you can choose between six different styles.
Badge Dock Icons. DockView can badge Dock icons with the number of windows that each application has open.
Activate windows. Click anywhere on a preview to activate the window.
Close windows. You can use DockView to easily close windows.
Spaces. DockView can show the Space number to which a window belongs to.
No hacks. DockView doesn’t modify the Dock or any system file.
Control Applications:
Window previews for iTunes show skip, play and pause buttons.
Window previews for iCal show upcoming events for the current day.