Microsoft (obviously) uses Office internally everywhere. If you have the money to buy all the little couplings (full version of the Office 2010 suite, 7 Enterpr

Microsoft (obviously) uses Office internally everywhere. If you have the money to buy all the little couplings (full version of the Office 2010 suite, 7 Enterprise, Communicator, Communicator compatible VoIP phones, smartphones with Exchange support, etc.) it works very, very well. There's a lot to be said about the cloud, especially for single individuals that move around a lot, but Microsoft has a really enticing offer for businesses.