Take Wikipedia, and mash it up a bit. That's what Cogmap is. Cogmap is a Wikipedia style organizational chart that maps out corporate structures. The application that they have created is pretty powerful and easy to use. Users can browse through organizations listed, and check out the corporate structures of companies including Google, Yahoo, and Microsoft. If you know of any incorrect information, or can add in additional names, members can make the changes. Cogmap is a pretty powerful tool. Like Wikipedia, if you need information on individuals like phone numbers, emails, job titles, and addresses, they could be listed here. Try it out.