Recently we researched over 1,800,000 websites in Alexa Top Sites by Category and learned which of the 9 leading Open Source CMSs are most commonly used in every of the 17 categories of the TOP web sites over the Internet. Our report reveals that Joomla! is the most commonly used CMS in the “World” category in Alexa catalogue and has the HIGH average rate in the rest of the basic categories. Well done, Joomla!
In January 2013 we carried out one more extensive research of 1,800,000 websites in Alexa Top Sites by Category but for 20 TOP open source CMSs on January 2013 (we took the CMS list from OpenSourceCMS.com which is slightly changing every month):
WordPress, Joomla, Drupal, TYPO3, DotNetNuke, WebPublisher, SPIP, MODx, Movable Type, Contao, Pligg, Concrete5, Plone, eZ Publish, Liferay, XOOPS, CMS Made Simple, SilverSpripe, Umbraco, Mambo.