Today, I saw the word "collaborative document", a project development team always exists on the sharing and timely update of the document, and it always uses a group of email in the case, but the effect is not very good. The existing solution is to use version control software, add documentation, but general developers always only care about the code, and there is instant update issues, so it highlights the advantages of collaborative documents. Wiki (Wiki) should be such reads, can be scheduled to be updated, browsed through the Internet or LAN, through configuration permissions. You can refer to Wikipedia.
There is now a Wiki called CoocooWakka, and a set of servers that implements Wiki is available for download.