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SPECIFICTION
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Eclipse Papyrus

eclipse.dev

Free plan WebWindowsmacOSLinuxSelf-hosted
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Spec score 8.1 #6 of 26 in UML Modeling Software

What it is

Eclipse Papyrus is a free modeling environment for UML and related extensions, with desktop and web options. It lists implemented standards including UML 2.5, SysML 1.6, fUML 1.3, ALF 1.0.1, MARTE 1.1, PSCS 1.1, PSSM 1.0, and ISO/IEC 42010. Teams can tailor profiles, model explorers, diagram notation and style, properties views, palettes, and creation menus. With Moka, models can run through animation and simulation. Papyrus-Web supports simultaneous work on a shared model in a browser, with changes visible to stakeholders; its editors cover diagrams such as class, component, use case, activity, state machine, and communication. Desktop downloads are listed for 64-bit Windows and Linux, as well as Intel and Apple Silicon macOS. Papyrus requires a Java 21-compatible JVM and is released under the Eclipse Public License v2.0. Related tools provide code generation and reverse engineering in C++, C, Java, and Python, plus documentation generation for LibreOffice, Word, and PDF. Papyrus-Web can be tested locally with Rancher Desktop or Docker Desktop, with deployment documentation linked.

Spec sheet

Purpose
Eclipse Papyrus is a modeling environment dedicated to UML and its extensions.Read 4 Oct 2026 · eclipse.dev
Intended users
The project describes Papyrus as an industrial-grade open source Model-Based Engineering tool and calls it industry ready and academia friendly.Read 4 Oct 2026 · eclipse.dev
License
The download page says Papyrus is released under the Eclipse Public License v2.0.Read 4 Oct 2026 · eclipse.dev
Founded
2008Read 28 Sep 2026 · eclipse.dev
Customization
Users can customize profiles, model explorers, diagram notation and style, properties views, palettes, and creation menus.Read 4 Oct 2026 · eclipse.dev
Desktop systems
Papyrus-Desktop downloads are listed for 64-bit Windows and Linux, and macOS for Intel and Apple Silicon.Read 4 Oct 2026 · eclipse.dev
Extensions
Listed related tools include Papyrus Designer for code generation and reverse engineering in C++, C, Java, and Python, and Papyrus-Model2Doc for generating documentation for LibreOffice, Word, and PDF.Read 4 Oct 2026 · eclipse.dev
Model execution
With Moka, Papyrus can execute models using an animation and simulation framework.Read 4 Oct 2026 · eclipse.dev
Runtime requirement
The download page says Papyrus requires a Java 21 compatible JVM.Read 4 Oct 2026 · eclipse.dev
Self hosting
The Papyrus-Web page says users can test it on their computer with Rancher Desktop or Docker Desktop and links to deployment documentation.Read 4 Oct 2026 · eclipse.dev
Standards
The site lists UML 2.5, SysML 1.6, fUML 1.3, ALF 1.0.1, MARTE 1.1, PSCS 1.1, PSSM 1.0, and ISO/IEC 42010 as implemented standards.Read 4 Oct 2026 · eclipse.dev
Support and community
The community page lists a wiki, discussions, developer mailing list, issue trackers, Git repositories, and Jenkins as user and developer resources.Read 4 Oct 2026 · eclipse.dev
Web collaboration
Papyrus-Web runs on a server in a web browser and lets multiple users work simultaneously on the same model with changes visible to all stakeholders.Read 4 Oct 2026 · eclipse.dev
Web diagrams
Papyrus-Web provides editors for class, composite structure, component, profile, use case, activity, state machine, and communication diagrams.Read 4 Oct 2026 · eclipse.dev

Plans and prices

Eclipse Papyrus Free Open source modeling environment; no usage limits stated Read 4 Oct 2026 · eclipse.dev

Every Eclipse Papyrus plan and price →

Strong points and limits

Strong points

  • Free plan; no usage limits stated.
  • Implements UML, SysML, and other listed standards.
  • Moka supports model animation and simulation.
  • Web users can edit a shared model simultaneously.
  • Desktop downloads include Windows, Linux, and macOS.

Limits

  • Desktop use requires a Java 21-compatible JVM.
  • Papyrus-Web runs on a server.
  • No pricing beyond the free plan is listed.

Who it suits

Papyrus suits engineering and modeling teams that need UML or related standards, including users seeking an open-source tool for industrial or academic work. Its browser collaboration is relevant to teams editing shared models.

Verdict

Papyrus combines a broad set of modeling standards with customizable diagrams, model execution, and browser collaboration. Desktop users need a compatible Java 21 JVM, while web collaboration requires server deployment.

Where Specifiction places it

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