From OpenSCADAWiki
OpenSCADA is an extremely modular, flexible and multifunctional SCADA system. As a result, the first acquaintance with OpenSCADA can be quite complicated due to the small chances of matching the previous experience of the user with the approaches of OpenSCADA or complete absence such experience. However, in large part, this is only the first impression since all OpenSCADA power is in the hands of the user and from the variety of which the user may be confused and it may require considerable effort to select the functions needed to solve its task.