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

Title	Version	Description	Rating
b2evolution	1.9.2	A multilingual multiuser multi-blog engine.
Mephisto	0.7.3	Mephisto is a blog engine with some simple CMS-ish concepts (sections, pages) and a very flexible templating system.
Movable Type	4.25	The Movable Type platform makes it easy for you to both author content and interact with your community of readers.
Nucleus	3.41	Maintains multiple weblogs.
Textpattern	4.0.8	A free, flexible, elegant, easy-to-use content management system for all kinds of websites, even weblogs.
Typo	5.3	Typo is a lean engine that makes blogging easy.
WordPress	2.8.1	A semantic personal publishing platform with a focus on aesthetics, web standards, and usability.
WordPress MU	2.8.1	The multi-user version of the WordPress blog engine.

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