There are plenty of free, paid, web-based, desktop-bound, cross-platform, or uni-platform alternatives, but there can only be one Office. Microsoft's flagship desktop suite of productivity applications just got a major new update. Office 2011 for Mac replaces Microsoft's Mac-specific Entourage email app with the industry standard Outlook, brings in some interface tweaks from Office 2010
over in PC land, and integrates with those Office Web Apps you've been hearing so much about. The entire "Home & Business" bundle goes for $279, and if you're not so into Outlook, you can get the Word / PowerPoint / Excel "Home & Student" version for $149.