Stardock Groupy - allows you to organize multiple applications into grouped tabs on your Windows desktop.
Features
• Drag and drop applications together to group them under a common tabbed interface
• Organize multiple applications and documents together for convenient access
• Group related tabs together for optimal workflow
• Manage tabs in quick and natural ways with the browser-like interface
• Add new tabs to existing groups quickly and easily
• Mouseover tabs to preview the window contents
• Copy files between Explorer tabs. Drag files to the target tab, pause to switch, and then into the target window.
• Automatically group instances of the same application together
Download: 
Stardock.Groupy.2.1.rar - 23.2 MB