Confluence, at its base, was built on the principle of a Wiki.

A Wiki or wiki (pronounced "wicky" or "weekee", see pronunciation section below) is a website (or other hypertext document collection) that allows a user to add content, as on an Internet forum, but also allows that content to be edited by any other user. (http://en.wikipedia.org/wiki/Wiki)

On top of basic wiki features, we have also added useful features.