Ikiwiki supports using several revision control systems for storing page histories.

Ikiwiki started out supporting only Subversion, but the interface ikiwiki uses to a revision control system is sufficiently simple and generic that it can be adapted to work with many systems by writing a plugin. Subversion is still a recommended choice; git is another well-tested option.

These are all the supported revision control systems:

bzr
Posted Tue, 29 Jan 2008 19:57:04 -0500

svn
Posted Wed, 24 Oct 2007 22:21:06 -0400

Git
Posted Sat, 20 Oct 2007 20:57:10 -0400

monotone
Posted Thu, 23 Aug 2007 21:44:29 -0400

mercurial
Posted Tue, 21 Aug 2007 00:25:03 -0400

tla
Posted Tue, 21 Aug 2007 00:25:03 -0400

There is a page with details about how the different systems work with ikiwiki, for the curious.