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Best UML Modeling Software in 2026

UML modeling software helps you work with diagrams and models, but the listed capabilities vary across these tools. Compared on UML diagram types, code generation, and reverse engineering, they also show details about model repositories and team collaboration.

  1. 01 BESSER

    BESSER suits developers and teams interested in low-code or AI-assisted software engineering through models and generated artifacts.

    Free plan Open source Web · Windows · macOS · Linux
    9.0 Visit Specs
  2. 02 Sparx Enterprise Architect

    It suits analysts, designers, architects, developers, testers, project managers, and maintenance staff working with modeled business or technical systems.

    Free plan Web · Windows · macOS · Linux
    8.9 Visit Specs
  3. 03 objectiF RPM
    Free trial Web · Windows · API · Self-hosted
    8.3 Visit Specs
  4. 04 Altova UModel
    Free trial Windows
    8.2 Visit Specs
  5. 05 ArgoUML

    ArgoUML suits people modeling UML 1.4 designs who need diagram exports, code generation, or Java reverse engineering.

    Free plan Windows · macOS · Linux
    8.2 Visit Specs
  6. 06 Eclipse Papyrus

    Papyrus suits engineering and modeling teams that need UML or related standards, including users seeking an open-source tool for industrial or academic work.

    Free plan Web · Windows · macOS · Linux
    8.1 Visit Specs
  7. 07 Horusec

    Horusec suits developers and DevSecOps teams that want configurable security analysis in development or CI/CD workflows.

    Free plan Web · Windows · macOS · Linux
    8.1 Visit Specs
  8. 08 StarUML
    From $129/mo Free trial Windows · macOS · Linux · Browser extension
    8.1 Visit Specs
  9. 09 BridgePoint

    BridgePoint suits software and hardware application development and system design using UML and model-driven methods.

    Free plan Windows · macOS · Linux
    8.0 Visit Specs
  10. 10 Visual Paradigm

    Visual Paradigm suits individuals and teams working across diagrams, software development, agile management, or enterprise architecture.

    From $4/mo Free plan Web
    8.0 Visit Specs
  11. 11 BOUML

    BOUML suits people modeling systems with UML who need code generation, reverse engineering, or project collaboration.

    Free plan Windows · macOS · Linux
    7.9 Visit Specs
  12. 12 UMLet

    UMLet suits people who want to sketch UML diagrams through text-based editing on desktop, in a browser, or within development tools.

    Free plan Web · Windows · macOS · Linux
    7.9 Visit Specs
  13. 13 Gaphor

    Gaphor suits people documenting systems with standard modeling diagrams, and teams that need to export, script, or embed models in documentation.

    Free plan Windows · macOS · Linux
    7.8 Visit Specs
  14. 14 kUML

    kUML suits developers and modelers who want diagramming and code-generation workflows expressed in Kotlin.

    Free plan Web · Windows · macOS · Linux
    7.8 Visit Specs
  15. 15 AgileUML
    Windows · macOS · Linux
    7.7 Visit Specs
  16. 16 JetUML

    It suits people who want a focused desktop UML tool for quickly sketching software ideas on Windows, macOS, or Linux.

    Free plan Windows · macOS · Linux
    7.6 Visit Specs
  17. 17 Modelio

    Modelio suits developers, analysts, and software or systems architects who need to model across multiple standards.

    Free plan Windows · Linux · Self-hosted
    7.5 Visit Specs
  18. 18 Umple
    Web · Windows · macOS · Linux
    7.3 Visit Specs
  19. 19 Violet UML Editor

    Violet suits developers, students, teachers and authors who need simple UML diagrams.

    Free plan Web · Windows · macOS · Linux
    7.3 Visit Specs
  20. 20 IBM Rational Software Architect Designer
    Windows · macOS · Linux
    7.2 Visit Specs
  21. 21 UMLGen
    Free plan Web
    6.9 Visit Specs
  22. 22 Astah UML
    Windows · macOS · Linux
    6.3 Visit Specs
  23. 23 PragmaDev Studio
    Windows · macOS · Linux
    6.2 Visit Specs
  24. 24 IBM Engineering Rhapsody
    Web · Windows · Linux
    5.9 Visit Specs
  25. 25 UML Lab
    5.9 Visit Specs
How this list is ordered. Specifiction scores each tool on how fully its maker documents it, whether its prices are published, where the research puts it, the platforms it runs on and whether it can be tried for free (how we rank). Makers can also buy a numbered place (how Specifiction is paid for).

BESSER, ArgoUML, and BOUML are among the entries to explore. Deployment and supported platforms add practical points of comparison, while free-plan availability and paid-from pricing give cost context. Consider which UML diagrams you need and whether your work involves generating code or reverse engineering. Then check the listed repository, collaboration, and platform details against the way you manage and share models.

Compare BESSER and Sparx Enterprise Architect Get a place on this list

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