WinTabs is a little program that makes it easier to access multiple documents while using various Windows programs. It adds to the caption bar a series of tabs, each representing an open document. With each new document you open, a new tab is added. To change active document, you only have to click on the document tab. WinTabs itself runs as a convenient icon in the System Tray area of the Windows taskbar.
Ample documentation is included, together with full support for installation and uninstallation.
See Documentation page for more details. Simple and unobtrusive - WinTabs places itself into unused part of window caption bar. Simple installation and uninstallation. WinTabs is distributed as a single file. Just download and run it and it will install itself.