Joomla! is again, another open source CMS (Content Management System) that has enjoyed popularity ever since its release as a fork from Mambo in 2005.
The new Joomla 1.5 system is flexible with a huge catalog of plugins and modules contributed by a large and active open source community. While its quite robust and can handle just about any site our clients have thrown at us, Joomla is limited in some ways compared to Drupal. At the same time, Joomla 1.5 is quite a bit more user-friendly for most clients compared to Drupal, who's administration panels do seem to have a learning curve for most non-technical administrators.
Discuss your site needs with us. We're happy to help you determine which CMS is best for you be it Joomla, Drupal or even WordPress.
We're experienced enough with designing templates for Joomla!, we've written a couple books: Joomla! Template Design, which focuses on older, Joomla 1.0 installations and our new: Joomla! 1.5 Template Design, which focuses on the new Joomla 1.5 fork/upgrade of Joomla completely away from any remaining legacy Mambo code. Both books are available via Packt Publishing.