From Dimitri ROOZENDAAL:
SliderDock is a application launcher for windows in the shape of a 3D wheel. This dock focus on making the access to icons easier by making them rotate toward a single focused point on the screen with the use of the mouse wheel. Once an application is launched, the dock will hide itself to not take precious desktop space and will clean its memory use for the smallest RAM footprint when it is not needed. Afterward SliderDock can be recalled with a simple keyboard shortcut. This application launcher is also compatible with skins and icons from other docks for a wide choice of customization.
The dock can also be controlled by keyboard and all keyboard shortcuts can be customized. It is also possible to group icons by sets, switching between sets with a simple click on the middle mouse. The dock also has an advance portable mode. When on a memory stick, dragging an application which is found on the same drive will give it a relative path, so even when on a different computer where the drive letter has changed, the dock is still able to find your portable applications and launch them.