Visual Paradigm for UML (Community Edition) for Linux 

Visual Paradigm for UML is a full lifecycle UML CASE tool that supports OOAD (OOA, OOD). VP-UML supports round-trip engineering, reverse engineering, real-time code generation, import Rational Rose, export/import XMI, report generator, plugin, etc.
visual paradigm uml modeler uml 2.0 uml tool modeling tool case tool class diagram use case rational rose object oriented oo

SDE for NetBeans (PE) for Linux 

SDE for NetBeans is a UML tool tightly integrated with NetBeans. You can draw UML diagrams in NetBeans, generate Java code, reverse engineer Java code to class diagrams, import Rational Rose, export XMI, generate documentation...
netbeans uml ood visual modeler add-in plugin uml 2.0 uml tool modeling tool case tool class diagram

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...
netbeans uml ood visual modeler add-in plugin uml 2.0 uml tool modeling tool case tool class diagram

SDE for NetBeans (PE) for Mac OS X 

SDE for NetBeans is a UML tool tightly integrated with NetBeans. You can draw UML diagrams (class, use case, sequence ...) in NetBeans, generate Java code, reverse engineer Java code to class diagrams, import Rational Rose...
netbeans uml ood visual modeler add-in plugin uml 2.0 uml tool modeling tool case tool class diagram

SDE for JDeveloper (PE) for Linux 

SDE for JDeveloper is a UML tool tightly integrated with JDeveloper. You can draw UML diagrams in JDeveloper, generate Java code, reverse engineer Java code to class diagrams, import Rational Rose, export XMI, generate documentation...
jdeveloper uml ood visual modeler add-in plugin uml 2.0 uml tool modeling tool case tool class diagram

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...
jdeveloper uml ood visual modeler add-in plugin uml 2.0 uml tool modeling tool case tool class diagram