Visual Paradigm for UML (Professional Edition) for Windows 

Visual Paradigm for UML is a UML modelling tool that supports full software lifecycle - object-oriented analysis, object-oriented design, etc. VP-UML supports reverse engineering, code generation, import XMI, Rational, Visio integration, plugin, etc.
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Visual Paradigm for UML (Professional Edition) for Java Platform 

Visual Paradigm for UML is a powerful but easy-to-use UML CASE tool that supports OOAD (OOA, OOD). VP-UML supports round-trip engineering, import Rational Rose, export/import XMI, report generator, MS Visio integration, version control, plug-in, etc.
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Visual Paradigm for UML (Professional Edition) for Linux 

Visual Paradigm for UML is an easy-to-use UML modeling tool that supports the latest UML notation (class diagram, use case diagram, sequence diagram, communication diagram, statechart diagram, activity diagram, component diagram, deployment diagram).
visual paradigm uml modeler uml 2.0 uml tool modeling tool uml diagram case tool class diagram use case rational rose object oriented oo

Visual Paradigm for UML (Modeler Edition) for Java Platform 

Visual Paradigm for UML is a powerful UML CASE tool that runs on the most popular IDE including Visual Studio .NET, IntelliJ IDEA, Eclipse, NetBeans, Sun ONE, JBuilder, IBM WebSphere,etc. +reverse engineering +code generation +import Rational, XMI...
visual paradigm uml uml 2.0 uml tools modelling tools uml diagrams case tools class diagrams use cases rational rose object oriented oo ood

Visual Paradigm for UML (Modeler Edition) for Linux 

Visual Paradigm for UML is a powerful but easy-to-use UML modeling tool supporting real-time synchronization between code and model, import Rational Rose, export/import XMI, report generator, MS Visio integration, plugins, version control, etc.
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Visual Paradigm for UML (Modeler Edition) for Mac OS X 

Visual Paradigm for UML is a powerful but easy-to-use UML tool. VP-UML supports reverse engineering for Java, XML, Dot NET dll/exe, C++, CORBA IDL, code generation, import Rational, XMI, report generator, Microsoft Visio integration, plugin, etc.
visual paradigm uml uml 2.0 uml tools modelling tools uml diagrams case tools class diagrams use cases rational rose object oriented oo ood