OnTopReplica

Allows to clone any of your windows and always keep it on top.

OnTopReplica is an open source program written in C# for .NET 4.0/4.5 that makes use of the Windows Forms Aero library.

The program allows you to clone any of your windows and keep it always on top while working with other windows, to select a subregion of the cloned window and auto-resize your windows.