Wappalyzer, one of our other projects in cooperation with its original founder Elbert F, is a browser add-on that uncovers the technologies used on websites. It detects CMS and e-commerce systems, JavaScript frameworks, analytics tools and more.

We have compiled the global OpenSource CMS information provided by the browser add-on on this page to give you an idea of the Top 20 Open Source CMS tools out there and their current market share. There are currently over 20,000 people that have the add-on installed and are reporting this data. Keep in mind that the statistics are of course only a snapshot of the past 30 days and only cover roughly 1% of the entire web.

#	Application	Websites using this	Pageviews
1	WordPress	1,322,502	38,693,858
2	Joomla	205,472	3,466,890
3	Drupal	149,711	7,672,222
4	TYPO3 CMS	34,852	906,060
5	DNN	12,348	264,109
6	Liferay	6,507	392,558
7	Concrete5	5,785	122,471
8	Contao	5,489	130,134
9	SPIP	5,310	130,707
10	CMS Made Simple	5,111	37,530
11	eZ Publish	3,952	131,934
12	SilverStripe	3,159	83,870
13	Umbraco	3,027	48,140
14	Plone	2,669	86,479
15	MODx	2,486	39,068
16	Movable Type	2,134	36,324
17	Pligg	1,807	90,914
18	XOOPS	1,734	41,580
19	Squiz Matrix	786	34,896
20	Contenido	607	7,918

You can help Wappalyzer by downloading the browser add-on and start reporting CMS statistics, too.