diagrams.net is a free online diagramming application and flowchart maker . You can use it to create UML, entity relationship,org charts, BPMN and BPM, database schema and networks. Also possible are telecommunication network, workflow, flowcharts, maps overlays and GIS, electronic circuit and social network diagrams.

　　diagrams.net是一个免费的在线图表应用程序和流程图生成器。您可以用它来创建UML，实体关系，组织结构图，BPMN和BPM，数据库模式和网络。也可能是电信网络，工作流程，流程图，地图覆盖和地理信息系统，电子电路图和社交网络图。