Here is Joomla is all about :
Short description: Joomla! is one of the most powerful Open Source Content Management Systems on the planet. It is used all over the world for everything from simple websites to complex corporate applications. Joomla! is easy to install, simple to manage, and reliable.
It's web is located in : http://joomla.org/
Currently, newest stable released is in version 1.0.12. take a look below to get idea, and start download it. It run on PHP web server. So choose carefully your web hosting service.
Joomla! 1.0.12 Released
|Tuesday, 12 December 2006|
Joomla! 1.0.12 [ Sunfire ] is available as of Monday the 25th of December 2006 1:00 UTC for download here.
We suggest that all Joomla! users upgrade to this version.