NetBeans UML CASE plug-in: UML diagrams - use case, class, deployment, ...
Editor: SDE for NetBeans is a UML CASE tool/plug-in tightly integrated with NetBeans. This UML tool supports full software development lifecycle - analysis, design, implementation, testing and deployment. This UML modeling tool helps you build quality applications FASTER, better and cheaper. You can draw all types of UML Diagrams in NetBeans, generate Java code, reverse engineer Java code to class diagrams and generate documentation.

SDE Features:
+the latest UML support (class diagram, object diagram, package diagram, use case diagram, sequence diagram, collaboration diagram, statechart/state diagram, activity diagram, component diagram, deployment diagram)
+Use case modeling (use case description, scheduling...)
+Textual analysis for identifying candidate classes, use cases, actors, flow of events...
+Business Workflow diagram
+CRC Card diagram
+Incremental round-trip engineering
+Automatic synchronization Between source code and diagrams
+Reverse engineering - code to model, code to diagram (Java to UML models, Java to UML diagram)
+Instant Reverse for XML, XML Schema, CORBA IDL, Dot NET dll/exe, Java, C++
+Code Generation - generate code, model to code, diagram to code (UML to code, UML model to Java)
+Automatic diagram layout - rearrange classes and connectors in UML diagrams in different styles
+Import Rational Rose
+Import/export XMI
+Export diagrams to SVG, PNG, JPG
+Microsoft Visio Integration - draw UML diagrams with MS Visio shapes
+Report generator for generating UML documentation to HTML or PDF
+Version control
+Template and plug-in
+Multilingual support
+More...

Other UML Modeling Tools / UML Plug-ins:
Java Platform (Linux/Windows/Mac OS X):
+SDE for NetBeans
+SDE for IBM WebSphere (WSAD)
+SDE for Borland JBuilder
+SDE for IntelliJ IDEA
+SDE for Oracle JDeveloper
+SDE for Eclipse
+SDE for Sun ONE
Windows Platform:
+SDE for Microsoft Visual Studio .NET
+More SDE... you can free download SDE for NetBeans (LE) for Linux 1.1 Personal Edition now.