Visual Paradigm for UML is a professional but easy-to-use UML modeling tool that supports complete software life-cycle - analysis, design, implementation, testing and deployment. This UML CASE tool helps you build quality applications faster, better and at lower cost. You can draw all types of UML diagrams, reverse source code, generate code from class diagrams and generate documentation. This UML tool also provides plenty UML resources including UML tutorials, demos, sample projects...

VP-UML Features:
+The latest UML support
+OOAD support - OO analysis (OOA), OO design (OOD)
+CRC Card support
+Business Workflow diagram
+Use Case Details Editor - An all-in-one environment for specifying a use case's details including general model specification and use case descriptions
+Full Screen Diagram Editing - Maximizes the diagramming area
+Sweeper - Drag to sweep shapes aside to make room for creating new shapes.
+EJB Diagram - Visualize EJB systems.
+EJB Code Generation and Deployment - Generate beans for your application development and deployment.
+ORM support - store Java objects into RDBMS
+Database generation - ERD to database tables
+Database reverse - existing DBMS to ERD
+Roundtrip engineering
+Reverse engineering - code to model, code to diagram
+Reverse engineering Dot NET dll/exe, C++, CORBA IDL
+Code Generation - model to code, diagram to code
+Auto-synchronization between source code and diagrams
+Report generator - generate HTML/PDF documentation
+Automatic diagram layout - rearrange shapes and connectors in diagrams
+Import/export XMI
+Import Rational Rose
+Visio Integration - draw UML diagrams with MS Visio stencil
+Export diagrams to images
+Team collaboration
+More...

Other UML Modeling Tools / UML Plugins:
Java Platform (Windows/Linux/Mac OS X):
+SDE for Eclipse
+SDE for NetBeans
+SDE for Sun ONE
+SDE for Oracle JDeveloper
+SDE for IBM WebSphere (WSAD)
+SDE for Borland JBuilder
+SDE for IntelliJ IDEA
+SDE for WebLogic Workshop

Windows Platform:
+SDE for MS Visual Studio .NET
+More SDE...