This document discusses wikis, which allow multiple users to collaboratively create and edit web page content. Wikis are useful when groups need to work together on documents. Wikipedia is provided as an example of a widely used wiki that allows registered visitors to edit content. Wikis enable instant collaboration without emailing documents and keep groups in sync from anywhere with an internet connection. Potential uses of wikis in education are discussed, such as tracking student participation or having a law school class collaborate to create a document.