Visual Paradigm for UML (Standard Edition) for Java Platform 

Visual Paradigm for UML is a platform-independent UML tool that runs on Windows, Linux, Mac OS X. VP-UML supports all UML diagrams, reverse engineering (Java, C++, XML, CORBA IDL, DotNET dll...), code generation, import Rational Rose, plugin, etc.
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Visual Paradigm for UML (Standard Edition) for Linux 

Visual Paradigm for UML is a UML modelling tool that supports full software lifecycle - OO analysis, OO design, coding, testing and deployment. VP-UML supports round-trip, reverse engineering, code generation, import XMI, Rational Rose, plugin, etc.
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Visual Paradigm for UML (Standard Edition) for Mac OS X 

Visual Paradigm for UML is an easy-to-use UML modeling software that supports OOAD (OOA, OOD). VP-UML supports round-trip, reverse engineering, real-time code generation, import Rational Rose, XMI, report generator, MS Visio integration, plugin, etc.
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Visual Paradigm for UML (Modeler Edition) for Windows 

Visual Paradigm for UML is an easy-to-use UML CASE tool supporting all UML diagrams - class diagram, use case diagram, sequence diagram, communication diagram, state diagram, activity diagram, component diagram, deployment diagram, object, package.
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SDE for NetBeans (PE) for Windows 

SDE for NetBeans is a UML plugin for NetBeans. You can draw all types of UML diagrams (class, use case, sequence, collaboration, statechart, activity, component, deployment, object diagram) and perform textual analysis in NetBeans...
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SDE for Sun ONE (SE) for Windows 

SDE for Sun ONE is a UML plug-in for Sun ONE. SDE supports reverse engineering (Java code to UML model), code generation (UML model to Java code), import Rational Rose project, import/export XMI files, Microsoft Visio integration...
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