Dock or palette tool for managing open windows as a project?

I am wondering if a utility is out there where you can make floating palettes or docks which you can add open windows to so that you can easily context switch between a group of open windows from different apps. You could create a project that would open all the documents or windows from different apps and then you have the means to easily switch between just those windows.

Anyone know of such a beast being out there in the wilds of Max OSX software?