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

Title	Version	Description	Rating
CMS Made Simple	1.5.4	CMS Made Simple makes it easy to set up a site and then hand it over to non-techies to maintain.
Drupal	6.15 (Stable) 5.21 (Old) 4.7.11 (Unsupported)	A full-featured content management/discussion engine suitable to setup a news-driven community or portal site.
Joomla	1.5.10  1.0.15	Joomla is a powerful Open Source Content Management System.
Mambo	4.6.5	Mambo is a powerful Open Source Content Management System.
Moodle	1.9.5  1.7.7	Moodle is a course management system (CMS) to help educators create effective online learning communities.
PHP-Nuke	8.0  6.0  5.0	A content management and portal solution featuring web-based administration, surveys, customizable blocks, modules and themes with multilanguage support.
phpWebSite	1.6.1	phpWebSite provides a complete web site content management system.
Radiant CMS	0.7.1	Radiant is a no-fluff, open source content management system designed for small teams.
Typo3 CMS	4.2.6	TYPO3 is a free Open Source content management system for enterprise purposes on the web and in intranets.
Xoops	2.0.18.2	XOOPS is an extensible, OO, easy to use dynamic web content management system written in PHP.
Zikula	1.1.1	Zikula is software that creates an impressive, dynamic web site and provides you with a site you can administer with a minimal amount of HTML knowledge.

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