Showcase of Popular websites Developed using Drupal CMS
Drupal is a free software package that allows an individual or a community of users to easily publish, manage and organize a wide variety of content on a website. Tens of thousands of people and organizations are using Drupal to power scores of different web sites, including
- Community web portals
- Discussion sites
- Corporate web sites
- Intranet applications
- Personal web sites or blogs
- Aficionado sites
- E-commerce applications
- Resource directories
- Social Networking sites
Showcase of Popular websites Developed using Drupal CMS
AT&T

AT&T, the largest provider of local long distance telephone services in the United States, is using Drupal on for an add-on site called AT&T Apps Beta.
The website requires you to log in so there isn’t much to explore without creating an account. Either way, AT&T Apps Beta is a platform for connecting highly involved AT&T customers with access to the latest and greatest mobile applications.
Can you see a pattern here? Another large organization using Drupal to build an add-on site. Once an organization has its feet wet with Drupal after implementing a couple of micro- or add-on sites, you start to see Drupal bubble to the top of the organization or to larger and larger web properties. Either way, it is great to see one of the largest technology companies use Drupal.
Intel

Intel Corporation, the world’s largest semiconductor chip maker, is using Drupal for its Intel Atom Developer Program, a website for developers that want to create and sell software applications for netbooks and smart phones that are using the Intel Atom processor.
Zappos

Long term Drupal developer Jeff Eaton continues to inspire and as a result, Zappos started using Drupal on zappos.com . Zappos.com is an e-commerce website with more than $1 billion in revenue, and well known for their legendary customer service and culture.
Whitehouse.gov using Drupal

Big, exciting news! The flag ship website of the U.S. government, Whitehouse.gov, just relaunched on Drupal. This is a big day for Drupal, and for Open Source in government, and something all of us in the community should be very proud of.
Mattel

Mattel, the world’s largest toy company, just relaunched Mattel.com on Drupal. The site was built by Vancouver-based work [at] play. Mattel products include Barbie dolls, Hot Wheels, Matchbox cars, Masters of the Universe, and much more.
Fujifilm

The Japanese Fujifilm, with more than 75,000 employees the world’s largest photographic and imaging company, is using Drupal for a community site at http://www.myfinepix.com. It is a website where FinePix camera owners come together to share images, knowledge and inspiration. The site features galleries, forums, photoblogs, news, competitions, user profiles and much more. A good showcase for some of Drupal’s social media features.
Grammys

After the Emmys, the Grammys are onto it as well. That is, the new Grammy.com is using Drupal — and Pressflow to be specific. The Grammy Awards, or Grammys, are presented annually by the National Academy of Recording Arts and Sciences for outstanding achievements in the music industry. Cool!
NVidia

NVidia recently launched their new Tegra developer community on Drupal. See nvidia . NVidia came to Acquia to help them get the site built. Development was done by Chapter Three (an Acquia partner) and Wiredcraft, while Acquia hosts the site on the Acquia Hosting platform and provides 24×7 monitoring and support. They are also using Mollom to protect their site against spammers.
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* Information obtained from: http://artatm.com/2010/02/showcase-of-popular-website-developed-using-dr...