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Open Source StarUML Alternatives

The best open source alternative to StarUML is PlantUML. If that doesn't suit you, our users have ranked more than 25 alternatives to StarUML and 19 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to StarUML are Umbrello, UMLet, Papyrus UML and NClass.

StarUML alternatives are mainly UML Modeling Tools but may also be Diagram Editors or Mind Mapping Tools. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of StarUML.
This page was last updated Jun 25, 2022
StarUML
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  • Mac
  • Windows
  • Linux

StarUML is a program to develop fast, flexible, extensible, featureful, and freely-available UML/MDA platform running on...

Learn more about StarUML

  1. PlantUML

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • Chrome OS

    PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams. The generator can be run anywhere within JVM and integrated with various application such as wiki, text editor, IDE, programming language, documentation generator, and others.

    Most users think PlantUML is a great alternative to StarUML.
  2. Umbrello

    • FreeOpen Source
    • Mac
    • Windows
    • Linux

    Umbrello is a Unified Modelling Language (UML) modelling tool and code generator. It can create diagrams of software and other systems in the industry-standard UML format, and can also generate code from UML diagrams in a variety of programming languages.



  3. UMLet is an open-source UML tool with a simple user interface: draw UML diagrams fast, export diagrams to eps, pdf, jpg, svg, and clipboard, share diagrams using Eclipse, and create new, custom UML elements.

  4. Papyrus UML

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • Eclipse

    Graphical modelling open source UML2 tool based on Eclipse environment.

  5. NClass

    • FreeOpen Source
    • Windows

    NClass is a free tool to easily create UML class diagrams with full C# and Java language support. The user interface is designed to be simple and user-friendly for easy and fast development.

    Discontinued

    Since 2010



  6. Modelio

    • FreeOpen Source
    • Windows
    • Linux
    • Eclipse

    Modelio is an open source modeling tool supporting natively UML, BPMN and model exchange with XMI. It allows to draw all UML2 diagrams and specific diagrams for business process modeling. It is easy and powerful with the capacity to add new functionalities to the application.

  7. Violet UML Editor

    • FreeOpen Source
    • Mac
    • Windows
    • Linux

    Violet is a UML editor with these benefits: Very easy to learn and use. Draws nice-looking diagrams. Completely free. Cross-platform. Violet is intended for developers, students, teachers, and authors who need to produce simple UML diagrams quickly.

  8. WhiteStarUML

    • FreeOpen Source
    • Windows

    WhiteStarUML is a fork of StarUML with an intent to revive its Delphi code base by updating code to recent Delphi editions, reducing dependence on third party components and fixing bugs and adding new features.

  9. PathVisio

    • FreeOpen Source
    • Online

    PathVisio is a free open-source pathway analysis and drawing software that allows drawing, editing and analysing biological pathways. It provides a basic set of features for pathway drawing, analysis and visualization. Additional features as plugins.

  10. UML Designer

    • FreeOpen Source
    • Mac
    • Windows
    • Linux

    UML Designer provides a set of common diagrams to work with UML 2.5 models. The intent is to provide an easy way to make the transition from UML to domain specific modeling.

Showing 10 of 19 alternatives