RocketDock - RocketDock is a Mac OS X dock clone.
ObjectDock - ObjectDock is the most popular animated dock for Windows.
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.
XWindows Dock - We've seen a lot of docks for Windows in our day, and they're usually not very good. We regarded XWindows Dock first with skepticism, then with guarded.
Stacky - Simple app enhancing windows task bar functionality with stacks of shortcuts.
CleverDock - A simple dock for Windows which features extensive theming capabilities and blurry reflections.