Open Source UML and Modeling in Java

StarUML

• Open source project
• A software modeling tool
• can develop fast, flexible, extensible, featureful, and freely-available UML/MDA platform
• replacement of commercial UML tools such as Rational Rose, Together etc.

ArgoUML

• Simple UI
• A powerful yet easy-to-use interactive, graphical software design environment
• supports the design, development and documentation of object-oriented software applications

 

Dia

• Create UML diagrams 
• Also supports flowcharts, network diagrams, and commonly used components.

AndroMDA

• A code generation framework that follows the Model Driven Architecture (MDA) paradigm
• takes a UML model from a CASE-tool and generates classes and deployable components (J2EE or other) specific for your application architecture
• comes with a host of ready-made cartridges like Axis, jBPM, Struts, JSF, Spring and Hibernate. 
• Also contains a toolkit for building your own cartridges or customize existing ones - the meta cartridge.

Modelio

• Open source tool for UML supports BPMN and UML2 standards 
• UML2 = supports WSDL, XSD, SoaML for supporting service modeling  
• BPMN = used for business process modeling

UniMod

• UniMod = Unified Modeling
• focused on designing and implementing applications behavior
• defines it’s own methodology for describing application behavior and delivers set of tools that consists of Java Finite State Machine Framework and Eclipse Plug-in
• Tools allow designing application logic with help of set of Class and Statechart Diagrams, 
• Generating finite state machine XML-description and then launch this XML-description using Runtime Framework

NetBeans UML plugin

Alma

• Software workshop for modeling and analyzing
• reads several sources (languages, models, etc.)
• helps you design for object-oriented modeling (definition of classes, relations, patterns, etc.)
• modifies the structure and the code, and outputs new sources, documentation, diagrams, etc.

NClass

• Open source and free tool
• useful in creating UML class diagrams
• requires .NET Framework 4.0 to run

UMLet

• Open-source lightweight Java tool for rapidly drawing UML diagrams with a sound and pop-up-free UI.
• Draw diagram sketches fast, teach UML with a simple UI
• Export diagrams to SVG, JPG, PDF and LaTeX-friendly EPS

JUG

• A tool for converting Java .class files into UML class diagrams
• It can read .class and .jar files, and output .emf or .eps files of the generated diagrams

Violet

• easy-to-use UML editor

MetaBoss

• An integrated suite of tools for design, development and management of software systems through modeling
• utilizes MDA (Model Driven Architecture) concepts
• High Level Enterprise Model based approach, proven coding patterns and ability to utilize the knowledge.

fujaba

• From Uml to Java And Back Again
• used for several research activities, e.g. distributed software, database systems, modelling mechanical and electrical systems and their simulation

LinguineMaps

• Open-source Java library that conducts programmatic visualization of various text files, generating from them easy-to-understand entity-relation diagrams
• supports programmatic visualization for :
• WSDL : draws relations between service, ports and port types
• Apache ANT build files : draws task dependency diagrams
• DTD for XML documents : draws relations between various entities and their attributes
• Apache ObJectRelationBridge (OJB) mapping files : draws UML-style class diagrams
• Hibernate mapping files (hbm) : draws UML-style class diagrams

UMLGraph

• Declarative specification and drawing of UML class and sequence diagrams
• cannot support all types UML diagrams (May be in future releases) 

UML/Dot

• makes UML class diagrams from JAVA source or bytecode