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:
cvs
Posted Thu, 10 Sep 2009 20:56:46 +0000
darcs
Posted Sat, 04 Apr 2009 22:38:48 +0000
bzr
Posted Wed, 30 Jan 2008 00:57:04 +0000
svn
Posted Thu, 25 Oct 2007 02:21:06 +0000
Git
Posted Sun, 21 Oct 2007 00:57:10 +0000
monotone
Posted Fri, 24 Aug 2007 01:44:29 +0000
mercurial
Posted Tue, 21 Aug 2007 04:25:03 +0000
tla
Posted Tue, 21 Aug 2007 04:25:03 +0000
There is a page with details about how the different systems work with ikiwiki, for the curious.