You talking about flyakiteOSX (http://www.flyakiteosx.com/). Easy to use interface, lots of tools and extra's built right in. If your a MAC fan but use a windows box at work/home/whatever I'd recommend this.
Besides rocketdock, you also have ObjectDock as well. They have a free and paid version. Paid allows you to add as many docks as you want, free only gives you one. You also have many other neat visualization options right from Stardock.com's website.