Top Alternatives to Dock

Docky is a full fledged dock application that makes opening common applications and managing windows easier and quicker.

Cairo-Dock is a desktop interface that takes the shape of docks, desklets, panel, etc.

Avant Window Navigator (AWN or Awn) is a dock-like bar for Linux, which sits on an edge of a user's screen and tracks open windows.

XLaunchpad is a versatile application addresses to all audiences that creates shortcuts to the most used computer resources.

Winstep Nexus Dock is a free professional dock for Windows. With Nexus, your most frequently used applications are only a mouse click away.

GNOME Panel is a highly configurable launcher and taskbar for GNOME. It formed a core part of the GNOME desktop in versions 1.x and 2.x. It has been replaced in GNOME 3.x by default with GNOME Shell, which only works with the Mutter window manager.

tint2 is a system panel/taskbar for Linux. It is described by its developers as "simple, unobtrusive and light".

HyperDock for Mac lets you take a quick look at the windows you have open in each program when you hover over icons in the Dock.

XWindows Dock was a clone of the dock in Mac OS X Leopard for Windows.