A Quick Look at Office Apps for Apple iPad: Documents To Go, Office² HD, & Quickoffice HD
Carl Brooks of http://iamthereforeipad.com looks at the few Office compatiable apps for the Apple iPad.
Documents To Go is an all-in-one application with support for Microsoft® Word, Excel & PowerPoint, PDF, Apple iWork and other files and attachments. It includes a desktop application (Win and Mac) to provide 2-way file synchronization and a version with support for Google Docs, Box.net, Dropbox, iDisk and SugarSync is also available. (Regular $9.99; Premium $14.99)
Office² HD, you can view, edit and create Microsoft Word compatible documents and Microsoft Excel compatible workbooks on the iPad. Additionally, Office² HD acts as a local file store, letting you store and view files of most types. Office² HD also integrates with Google Docs and MobileMe iDisk, giving you access to your valuable data, wherever you are. Price $7.99
QuickOffice - ACCESS. VIEW. EDIT. SHARE. Quickoffice Connect™ Mobile Suite is the FIRST full-featured* Microsoft® Office productivity suite for iPhone® or iPod® touch with integrated access to multiple cloud services. Does NOT edit Powerpoint documents! Price: $9.99