Business processes are at the core of today’s businessworld. Most of the effort put into business processes in practice is either the task of designing a new process or the task of analyzing and improving an existing process. In both cases, visualizations of the process models support the user in achieving his objectives. In this paper, we present the first prototype of our tool “BPMN-Layouter”. Our supported notation language is the business process modeling notation (BPMN). The tool was implemented to integrate several concepts that we developed and adopted for the use in BPMN modeling. The integratedapproaches comprehend the tasks of finding an automatic layout for a BPMN model, increasing the readability of given visualizations and developing further existing BPMN models in an interactive fashion. Also, a method for automatic division of complex BPMN models is provided, too.