UML Class Diagram Tool
Software Ideas Modeler
Software Ideas Modeler is a UML class diagram tool with an intuitive user interface that allows you to draw class diagrams quickly and easily. The unique diagramming features let you effectively use your mouse and keyboard for the best creative experience. The classes in the diagram can be styled and automatically aligned using various layout features. The produced diagrams are not just ordinary pictures, as in many other diagram editors. They are complete models that can be supplemented with other details and documentation and reused in other places of your project.
UML Class Diagram Tool