Drupal CMS: how many web sites use Drupal, and how popular is it compared with other CMS systems ?

From Wikipedia: Drupalon 30 Jan 2014:

Drupal /ˈdruːpəl/[5] is a free and open-source content management framework written in PHP and distributed under the GNU General Public License. It is used as a back-end framework for at least 2.1% of all websites worldwide ..

The standard release of Drupal, known as Drupal core, contains basic features common to content management systems. These include user account registration and maintenance, menu management, RSS feeds, page layout customization, and system administration. The Drupal core installation can be used as a simple website, a single- or multi-user blog, an Internet forum, or a community website providing for user-generated content.


As of August 2013, there are more than 22,900 free community-contributed addons, known as contributed modules, available to alter and extend Drupal's core capabilities and add new features or customize Drupal's behavior and appearance. Also Drupal has 30,000 Developers (As of 11 November 2013).


From July 2007 to June 2008, Drupal was downloaded from the Drupal.org website more than 1.4 million times, an increase of approximately 125% from the previous year.


As of August 2013, more than 910,500 sites are using Drupal.

Webel IT has made a major investment in Drupal for the better part of a decade, and runs dozens of Drupal6 and Drupal7 sites for a wide range of clients in industry, engineering, science and education as well as eCommerce sites and subscription sites for commercial clients, and some community web sites. It is pleasing to know that Drupal is growing in popularity, and in relative popularity compared with other CMS systems when measured amongst the world's most used web sites.

It is difficult to get reliable hard numbers, but some people have made some brave attempts to measure or estimate Drupal's actual usage, and its popularity relative to other CMS systems.

One simple indication of the total number of Drupal sites is simply the number of report-back installs (usages reported from live sites with the Updates Status module on) - which is only a subset of all installs - available under Usage statistics for Drupal core, which on 19 Jan 2014 gave 788,547 for version 7.x alone, and 998,878, or nearly 1 million across all versions.

There is a live pie/line graph system on Built With: Web Technology Trends under Content Management System, which enables you to generate stats for various CMS systems including Drupal for the world's top 10K sites, top 100K sites, top 1M sites, and the all CMS sites. As of 30 Jan 2014 they show that Drupal runs about 14.23% of the world's top 10K sites (and about 6.5% of the top 1 Million sites):

Although a bit out of date, there is an excellent analysis from Nov 2010 at How Many Websites Use Drupal? Let's Estimate A Number [Part One], who estimated 7.2 million "live" sites using Drupal as of July 2010.

In any case, it is clear that - given that the blog-born WordPress is in some respects a victim of its own success that has out-grown its initial intention, and has many significant limitations compared with Drupal for more demanding web sites (think for example of the incredible power of the Drupal Views query and reporting system, which WordPress can't even touch) - Drupal is currently the world's leading truly powerful and flexible CMS web site system !
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