Visual Paradigm for UML (Personal Edition) for Java Platform 

Visual Paradigm for UML is a powerful but easy-to-use UML tool. VP-UML supports reverse engineering (code to model), code generation (models to code), import Rational, export/import XMI, report generator, MS Visio integration, plugin, template, etc.
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Visual Paradigm for UML (Personal Edition) for Linux 

Visual Paradigm for UML is a cross-platform UML modeling tool that runs on Windows, Linux, Mac OS X. VP-UML supports all UML diagrams, reverse engineering (code to model), code generation (models to code), import Rational, MS Visio integration, etc.
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Visual Paradigm for UML (Personal Edition) for Mac OS X 

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 (Community Edition) for Windows 

Visual Paradigm for UML is an easy-to-use UML tool that supports reverse engineering for Java, XML, XML Schema, .NET dll/exe, C++, CORBA IDL, code generation, import Rational, XMI, report generator, MS Visio integration, version control, plugin, etc.
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Visual Paradigm for UML (Community Edition) for Mac OS X 

Visual Paradigm for UML is a full life-cycle UML CASE 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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SDE for JDeveloper (PE) for Windows 

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