Wikis are widely used by communities to create and update documents on the Web. This presentation describes the potential of Wikis for producing DAISY (more precisely DTBook) contents. We discuss how to convert existing Wiki contents into DTBook. We also examine how DAISY content producers could use Wikis as an easy and free tool to collaboratively edit their documents. The case of MediaWiki is studied (this Wiki software is used by Wikipedia, Wikisource, Wikibooks, …). We describe how to expand its functionalities as to make possible the importation and exportation of DTbook contents.