Ikiwiki, and this documentation wiki, are developed in a git repository and can be checked out like this:
You can push changes back to ikiwiki's git repository over the git://
transport, to update this wiki, if you'd like, instead of editing it on the
web. Changes that could not be made via the web will be automatically
rejected.
git clone git://git.ikiwiki.info/
Or like this if your firewall only passes http traffic (slow):
git clone http://git.ikiwiki.info/ikiwiki.git/
The gitweb is here.
Commits to this git repository are fed into CIA, and can be browsed, subscribed to etc on its project page. They're also fed into twitter.
personal git repositories
You are of course free to set up your own ikiwiki git repository with your
own patches. If you list it here, the gitremotes script will
automatically add it to git remotes. Your repo will automatically be pulled
into Joey's working tree. This is recommended. 
- github
git://github.com/joeyh/ikiwiki.git(browse)
A mirror of the main repo, automatically updated. - smcv
git://git.pseudorandom.co.uk/git/smcv/ikiwiki.git - intrigeri
git://gaffer.ptitcanardnoir.org/ikiwiki.git - gmcmanus
git://github.com/gmcmanus/ikiwiki.git - jelmer
git://git.samba.org/jelmer/ikiwiki.git
branches
Some of the branches included in the main repository include:
gallerycontains the Gallery plugin. It's not yet merged due to license issues. Also some bits need to be tweaked to make it work with the current master branch again.htmlis an unfinished attempt at making ikiwiki output HTML 4.01 instead of xhtml.wikiwygadds wikiwyg support. It is unmerged pending some changes.darcsis being used to add darcs support.debian-stableis used for updates to the old version included in Debian's stable release, anddebian-testingis used for updates to Debian's testing release.pristine-tarcontains deltas that pristine-tar can use to recreate released tarballs of ikiwiki