UML Diagram Maker is a powerful yet easy-to-use UML diagram drawing program which makes it easy to create professional-looking UML diagrams with built-in symbols and templates. Easy to make UML sequence diagram, use case diagram, UML class diagram, UML activity diagram, UML deployment diagram and more.
Edraw UML diagram software, which has already done greatly on Windows, finally released its Mac version, and many features have been advanced. It is a great UML diagram Visio alternative for Mac OS, which doesn't cost much. Download a trial version now to see its abundent resources and experience its powerful capabilities. You will like it.