SDE for IntelliJ IDEA is a full-featured UML CASE tool seamlessly integrated with IntelliJ IDEA. SDE supports full software development life-cycle - analysis, design, implementation, testing and deployment. You can perform textual analysis and draw UML diagrams (class, use case, sequence, collaboration, state chart, activity, component, deployment) in IntelliJ IDEA...
+Visio integration
+Reverse engineering XML, Dot NET dll/exe, C++
+more