Microsoft Office 2013
MS Office 2013 which was in development since 2010 is one of Microsoft's star products. One of its main innovations compared to MS Office 2010 is its extended file format support, user interface and support for touch.
Microsoft Office 2010
The quintessential productivity suite for college students
10Calc business-productivity Calculator
A full version program for windows, by Gerald Maffeo
A free program for windows