Microsoft SharePoint

Microsoft SharePoint is a web application platform for collaboration  from microsoft.com.

The graphic interface of Microsoft SharePoint from microsoft.com:

The link of Microsoft SharePoint website is
http://windows.microsoft.com  last updated 7/11/2013

The related programs can be found at page
http://office.microsoft.com/en-us/sharepoint/   last updated 7/11/2013  

The Microsoft SharePoint can be downloaded at
http://windows.microsoft.com/en-us/internet-explorer/ie-8-worldwide-languages     last updated 7/11/2013

source: http://www.microsoft.com/en-us/download/details.aspx?displaylang=en&id=21581 last updated 7/11/2013