There are lots of great open source content management systems irrespective of the site you’re creating. Most of the web designers don’t waste their time in learning various CMS. So below there are top open source CMS.
WordPress: It is software mainly used to construct beautiful blog or website. At the same time it is free and priceless.
Joomla: It is used by prominent companies like MTV, IHOP and Harvard University. It is best suited for back end networks.
Drupal: It is also another most popular CMS utilized by several high profile companies like Popular science, MIT, Fast company etc.
TextPattern: It is a PHP based CMS and very much flexible. It makes use of tagging system to obtain the content and to display easily.
Contao: It combines Ajax and Web 2.0 features with the help of user interface to improve efficiency. Some advanced editing features are included for content, editing several records.
SilverStripe: It is best suited for web designers and developer who are very much comfortable in coding because they have tutorial and recipes for beginners.
Umbraco: Full control is provided to the designers over design aspects and pays attention on web standards. It allows customizing the back end with custom applications.
Concrete5: It is easy to convert a HTML website to a concrete5 in just minutes. Themes can be coded with CSS and HTML using concrete5.
CushyCMS: It consists of unlimited sites, editors and pages but the feature is limited free version. It makes easy for the clients to edit their content.
ExpressionEngine: It is also one among top content management systems providing excellent facilities for the designers in developing the site beyond their imagination.