komposé

Komposé provides a fullscreen view of all your tasks and/or virtual desktops where every window is represented by a scaled screenshot of it's own.

0.5 now features support for the Composite and Damage extensions (disabled by default, enable it in the preferences), however with the current state of graphics drivers XOrg may be awfully slow (or even crash sometimes) when enabling the Composite extension.
So blame me for your bad gfx drivers :)

0.5.3
- well, 0.5.2 didn't show plain and tiled backgrounds right... here we go
- updated author's email addy

0.5.2
- Nicer layouting (less grid-like)
- ADD: Icons for different views (thanks to Bill Kendrick)
- FIX: no more debug out if compiled normally (qDebug() to kdDebug())
- some code cleanups
- Remove flicker on desktop widget mouseover
- Added the ability to show the currently activated Desktop number on the systray icon (thanks to Debajyoti Bera)
- get rid of KRootPixmap
- Autoactivate when mouse moves on to the screen edge

0.5.1
-Hot corners delay controls whether Kompos�is started and not when it's started :)
-imlib2 error message added to configure script
-Fixed "if a kompose window (prefs, about) is open, you are stuck"
-Added german translation (thanks to Thomas Fischer)

0.5:
-Composite support to take screenshots without raising windows
-Damage support for live-updates of windows
-major refactoring for a cleaner design
-new View Type (current desktop)
-activate when mouse moves in one of the screen's corners
-added popup menu for windows
-added a small screenshot delay for passive screenshots. This should make switching between tasks seem more responsive (redraws occur before taking screenshots) and help on most of the "overlapping windows" problems
-fixed flashing background when activating Kompos�
-Switched to themable KDE cursors
-Window title changes are now updated properly
-Correct handling of windows that are on all desktops
-additionally using hjkl(vi) keys for moving and c/m keys for close/minimize/restore
-Imlib2, Composite and Damage autodetected through configure
-some minor bugs and various smaller performance improvements