From Serhiy Perevoznyk:
Krento is a modern skinnable application manager and widget engine for Microsoft Windows. Krento can save your desktop space and assist you in boosting your productivity. With Krento you can launch your programs or open web pages from a circular 3D dock. You can save and load your applications sets, having more than one application set available. Drag and drop your files, folders, and shortcuts onto one of the Krento stones. The stone can be a shortcut or even a mini-application (widget).