[Mercurial](http://selenic.com/mercurial) is a distributed revison control system developed by Matt Mackall. Ikiwiki supports storing a wiki in a mercurial repository. Ikiwiki can run as a post-update hook to update a wiki whenever commits come in. When running as a [[cgi]] with Mercurial, ikiwiki automatically commits edited pages, and uses the Mercurial history to generate the [[RecentChanges]] page.