A complete, powerful UML tool
Beginners, students, and commercial users alike will find Poseidon for UML to be a thorough UML tool without the limits imposed by the community versions of other tools. It contains all 9 UML diagrams and all implemented diagram elements. You can create and load projects, browse existing models, exchange models, generate Java code, export your diagrams to various formats, and much more.
Export options such as printing and saving are available with a license rental or rent subscription. The cost-free version can be used to view, create, and edit models, but the export options are not available.