Microsoft offers a Microsoft Office 365 University 3-Month Subscription for Windows and Mac bundled with 20GB of SkyDrive storage for free. That's the best deal we've seen on these services. (We saw Office 365 Home for a year with the SkyDrive storage and a $15 Dell gift card for $100 a week ago.) Office 365 streams full versions of Word, PowerPoint, Excel, Outlook, OneNote, Publisher, and Access. An Internet connection and a .edu email address are required. Deal ends May 12.