ClearOS - A very good alternative for Windows Server, for free
RocketDock - RocketDock is a Mac OS X dock clone.
NethServer - NethServer is an operating system for Linux enthusiasts, designed for small offices and medium...
ObjectDock - ObjectDock is the most popular animated dock for Windows.
Univention Corporate Server - Univention Corporate Server UCS with Active Directory functions and App Center is the cost-efficient and popular successor to Microsoft's server solutions.
Cairo-Dock - Cairo-Dock / GLX-Dock 3. 4 is now available. Cairo-Dock 3. 4 is finally released! One year after the 3.