SDE for IntelliJ IDEA is an easy-to-use UML tool seamlessly integrated with IntelliJ IDEA. SDE supports full software development life-cycle -analysis, design, implementation, testing and deployment. You can draw UML diagrams (class, use case...) in IntelliJ IDEA, generate Java code, reverse engineer Java code to class diagrams, import Rational Rose...
+Visio integration
+Reverse XML, C++, CORBA IDL
+Plug-in and template support
+more