microsoft shared point like web site

My friend asked me if it is possible to build a web site like Microsoft shared point for his planning startup company. He want to share doc with his employees. I think the reason he asked is Microsoft is too expensive. I have no idea right now for this. Any开发者_运维技巧body knows anything about this? thanks,

EDIT:

Because docs shared are sensitive (contains SSN and other sensitive data), security should be good enough.

If he just wants to share file he could try Box.net or dropbox. Box.net also have simple workflows with tasks.

I use Google Docs quite often and it is very useful. You can also setup a wiki and attach docs as needed.

Microsoft SharePoint Foundation is free and comes with a host of features.

Tell your friend to sign up for Microsoft BizSpark. This is a free program from Microsoft specifically for startups and will give them access to a whole suite of software for free for 3 years (with a $100 charge at the end). This includes SharePoint.

I would recommend a combination of Google Sites and Google Docs. It's free, it's easy, and it eliminates the need to maintain the hardware and other infrastructure associated with a site, much less something as heavy-weight as Sharepoint.