Microsoft Office Web Apps
Office Web Apps give you the power to quickly and easily get things done when you want, where you want, from virtually any computer with an Internet connection.Just click, and the document, workbook, presentation or notebook that you saved to a SharePoint 2010 site or a SkyDrive folder opens in your web browser. View your Word, Excel, PowerPoint and OneNote files and quickly make a change to the content. If you need to do a bit more, familiar formatting and editing tools are easily at-hand in the various Microsoft Office Web Apps.