Google Sites
Google has recently announced Google Sites and they are continuing their march to cracking the business marketplace beyond just advertising. They are positioning against Microsoft’s Sharepoint which is interesting. Sharepoint actually can do much more but for simple things like team projects and internal sites, Google Sites can be appealing especially since it free.
You’re company / school will have to be part of Google Apps in order for you to use it though. Google Apps has a free edition as well as a paid version. You can check it out by using the free version first.