If you have a large team who all need access to documentation to make updates, perform reviews etc then groupware or project management tools can be invaluable. These tools include features such as project plans, document repositories with configuration management, approval routing and discussion forums.

PHProjekt and e-Groupware are two groupware solutions that can be used for free. Try them out using a Lycos hosting account from e-CommerceGuru.co.uk Hosting

If you are looking to create an online reference that can be edited and added to collaboratively, then you need a Wiki. There are many online references created in this way.

Set up a collaborative online reference guide using Tipi/Wiki and Lycos hosting at e-CommerceGuru.co.uk Hosting