Office Tab Enterprise

Office Tab Enterprise screenshots

Browse, edit and manage multiple Office documents in a single tabbed window
Settings Window
Office Tab Enterprise 10.5 : Settings Window

Alternative downloads

Office Tab Free Edition
13.10
FREE
It lets you use the handy tabs in MS Office applications.
Docs Opener
0.1
FREE
Docs Opener 0.1 will allow you to open documents of different formats.
Excel Workbooks Tabs
5.10
With this Office add-in, you can open multiple documents in a single window.