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BackSlide
Automatic background-image (wallpaper) slideshow for Gnome Shell
Coverflow Alt-Tab
Replacement of Alt-Tab, iterates through windows in a cover-flow manner.
Hibernate Status Button
Adds a Hibernate button in Status menu. Using Alt modifier, you can also select Hybrid Sleep instead.
Quick Close in Overview
Close windows with a button click (the middle one by default) when in overview mode
Status Area Horizontal Spacing
Reduce the horizontal spacing between icons in the top-right status area