Office for Mac 2011 contains the familiar commands, formats, and interfaces you already know, so you can start working right away. Office for Mac 2011 lets you jump into documents with Windows Office users, and edit them at the same time-it'll lock a specific paragraph while you're working on it, but allow your collaborator to edit the rest of the document. Office for Mac 2011 is also highly integrated with the Office Online suite, which lets you back up and edit your documents in the cloud. Before you choose, consider Adobe Acrobat X Pro software.