Web Content Management
In 2000 your CMS mattered fiercely, it does not today. While there are tradeoffs, advantages/disadvantages depending on the use case, varying levels of familiarity, the brass tax of the matter is that it does not and should not matter more than the actual content and marketing efforts behind the asset (site/system/app/affiliate/etc)
Drupal
Drupal has established a tremendous presence in the enterprise, content rich, and more developer oriented community.
We build a lot in Drupal, attend Drupalcon, encourage our team to participate in open source projects within the community, and bring value back as a result of our efforts.
Wordpress
We have one of the worlds biggest and best wordpress teams.
We build and manage a huge number of Wordpress sites.
Joomla
We started using Joomla before it was Joomla.
There are a variety of other systems we have worked in, including Expression Engine, Perch, and more...we don't like to get too caught up in the specific technology, rather the business challenge we are solving with the technology.
Drupal is hugely popular and respected within the open source PHP CMS crowd, and it's for many good reasons. The theme system is always on par with the best in the world, it's modularity and built-in core functionality are extremely powerful, and the community surrounding it is second to one in great-people ratio metrics.
The web would not be what it is today without wordpress, the powerful idea behind it - open source, remote collaboration, freedom to create and share. It is a truly amazing impact in the world and feat accomplished by the Wordpress community. You can describe it as a blog, a content management system, a framework, an application, a community, a tool, an idea, and many other things - which is what makes us proud to call Wordpress one of our passions.
Wordpress is a great tool for a lot of clients around the world. It is a connector like no other - we've found ourselves attached to our computers, rebuilding a wordpress site for a major international athletic event, collaborating with people on 3 continents in 5 timezones to launch for an event. Wordpress is a connector, and a great technology to build websites on.
Regarding Joomla, #It'sTrue. When we first used it, it was a project called Mambo Server, which was a leader in early open source CMS systems. It had the community and a company backing it. Unfortunately, the disagreement between the company and it's community lead to a fork, and Joomla was born. Not that you care - however, it's an interesting note, eh?
We have experience and expertise in Joomla and can definitely help with your needs. We serve number of Joomla sites, including site administration, custom development, and theming.