Witch - Welcome to the world of W. i. t. c. h.
RocketDock - RocketDock is a Mac OS X dock clone.
Contexts - Switch between application windows effortlessly — with Fast Search, a better Command-Tab, a Sidebar or even a quick gesture. Free trial available.
ObjectDock - ObjectDock is the most popular animated dock for Windows.
Hyperswitch - HyperSwitch provides a compelling alternative to HyperDock for keyboard junkies. What's New
Winstep Nexus - The Winstep Nexus Dock is a FREE* professional dock for Windows. With Nexus, your most frequently used applications are only a mouse click away - and Nexus turns working with your computer into a fun and exciting experience.