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).
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Visual Paradigm for UML (Professional Edition) for Mac OS X 

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