The list of open source wiki software we can supply or host, install, configure, and support (at the time of writing) is as follows :-

Title	Version	Description	Rating
DokuWiki	2009-02-14	DokuWiki is a standards compliant, simple to use Wiki, mainly aimed at creating documentation of any kind.
Instiki	0.16.6	Instiki is a wiki clone with strong focus on ease of installation and running.
MediaWiki	1.14.0	MediaWiki is a free Wiki software package, used to run WikiPedia.
MoinMoin	1.8.3	Advanced, easy to use and extensible WikiEngine with a large community of users.
Php-Wiki	1.3.14  1.2.11	A Php-WikiWeb is a web site where anyone can edit the pages through an HTML form.
TikiWiki	2.4	A full featured free software Wiki/CMS/Groupware written in PHP.
TWiki	4.3.1	TWiki is a flexible, powerful, and easy to use enterprise collaboration platform.

If there is a title that is missing off this list we might be able to install it for you.