When talking about the story of the most successful ASP.NET based open source CMS, Umbraco founder and chief developer Niels Hartvig can hardly hide his amazement: "Initially, the system was created as a fun project. Over the first six months with Umbraco we had probably 1,000 system downloads. More than 15 years later we are registering a higher number of new installations per day."
Originally developed as a community platform for a student dorm, Drupal has become more of an application framework than just CMS, thanks to its large and active developer community. It fulfils the broadest range of requirements, combining flexibility, scalability, accessibility, and today’s latest web technologies. 38 % of the fortune 50 websites are built with Drupal - it is the third most used CMS in the world.
OpenCms is a complete CMS platform for the creation of internet or intranet websites. Users of OpenCms include the Chicago Mercantile Exchange (CME), Bayer Business Services, mobile.de, SWITCH, the WAZ media group, Salesforce.com, Sky, as well as the official Spanish tourist portal spain.info.
TYPO3 has pragmatic, professional roots in the world of digital agencies. Its design and development direction has always been to enable digital agencies to serve their customers best. The community likes to call TYPO3 CMS “The Enterprise Content Management System” and it retains strong adoption in universities, government, and enterprises in central Europe among its 500,000+ reported installations. It is supported by a large agency- and service provider-base, especially in the “DACH” German-speaking region.
ScientificCMS is a CMS that makes the creation and maintenance of websites easier for academic research institutes, at the same time that it facilitates scholarly communication and collaboration. It also aims at large organizations which need to present many different pieces of information with high complexity on their websites.
Plone is Python-based efficient and flexible high-performance Content Management System designed for professional use. It stands out especially because it features a secure and sophisticated access control management, quality assurance in content management, a workflow-controlled collaborative management of content, universal usability and powerful tools for system administration.
Until recently, django CMS had been considered a well-kept secret. But now that it is used by Mercedes-Benz, as well as other major companies such as Orange, Vodafone, Discovery Channel, La Libération, National Geographic, it seems fair to say that the secret is out. The system offers all of the functions users expect of a modern CMS.