You can quickly access your running tasks from anywhere you currently are in your phone and launch new apps from the current screen. Icons are rendered in a wave-like parabolic view and tasks are accessed by sliding your finger on the dock.
Now you can add custom launchers and contacts and exclude apps from the Dock. There is a fully functional LITE version. In the PAID version (under ~1 € only) you may access all sort of different settings, including: up to 16 launchers, excludes or contacts, background color, exponential curve, maximum number of icons, icon offset etc... Now Dock4Droid Unlock may alternatively be purchased at AndAppStore or Soc.io mall using PayPal.
Now there is companion dock for Dock4Droid called Dial Dock. Both docks may be used in parallel so you may for example have your contacts in DialDock and you apps in Dock4Droid, one at the right corner of the screen and the other on the bottom.