The content management system with unique graphics environment and characteristic of cloud computing operating systems is major subject of this thesis. The core of the system consist of: - PHP code on the server side - JavaScrip with data asynchronous transmission (AJAX technology) on the client side. MySQL database is used for saving data and system’s setting. The core of the system is able to create and manage any number of user’s window and also handle synchronization of data between client and server. System is programmed modulary – system is able to expand by modules. System contains several frequently used modules as: user manager, content manager, events, photogallery, contests, etc. To create new modules quickly and easily are prepared some classes which can manage and generate basic system’s objects. Translation of system to any language is possible because of the text part loading from a language file.