[v5.1] StarUML – Sophisticated software modeler for agile and concise modeling

StarUML (the successor of an object oriented modelling software called Plastic) is a free and open-source UML (Unified Modeling Language) and SML (Systems Modeling Language) modeling tool for Windows, Mac and Linux platforms, developed by MKLabs from Korea, using Java. It allows users to draw various UML/SML diagrams (such as class diagrams, use case diagrams, class diagrams, sequence diagrams, state diagrams, activity diagrams, communication diagrams, module diagrams, deployment diagrams, composite structure diagrams, etc.).